EP2019753B1 - Assemblies in the printing unit of a rotary press - Google Patents
Assemblies in the printing unit of a rotary press Download PDFInfo
- Publication number
- EP2019753B1 EP2019753B1 EP07729400A EP07729400A EP2019753B1 EP 2019753 B1 EP2019753 B1 EP 2019753B1 EP 07729400 A EP07729400 A EP 07729400A EP 07729400 A EP07729400 A EP 07729400A EP 2019753 B1 EP2019753 B1 EP 2019753B1
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- roller
- ink
- printing
- arrangement according
- rollers
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/08—Cylinders
- B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
- B41F13/26—Arrangement of cylinder bearings
- B41F13/30—Bearings mounted on sliding supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/02—Ducts, containers, supply or metering devices
- B41F31/04—Ducts, containers, supply or metering devices with duct-blades or like metering devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/26—Construction of inking rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/30—Arrangements for tripping, lifting, adjusting, or removing inking rollers; Supports, bearings, or forks therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/30—Arrangements for tripping, lifting, adjusting, or removing inking rollers; Supports, bearings, or forks therefor
- B41F31/301—Devices for tripping and adjusting form rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/30—Arrangements for tripping, lifting, adjusting, or removing inking rollers; Supports, bearings, or forks therefor
- B41F31/304—Arrangements for inking roller bearings, forks or supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/30—Arrangements for tripping, lifting, adjusting, or removing inking rollers; Supports, bearings, or forks therefor
- B41F31/32—Lifting or adjusting devices
- B41F31/36—Lifting or adjusting devices fluid-pressure operated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F7/00—Rotary lithographic machines
- B41F7/20—Details
- B41F7/24—Damping devices
- B41F7/26—Damping devices using transfer rollers
Definitions
- the invention relates to an arrangement in a printing unit of a rotary printing press according to the preamble of claim 1.
- DE 44 39 144 A1 / C2 is an inking unit of a rotary printing machine with a printing ink from a ink reservoir receiving ink fountain roller and a plurality of ink on a printing unit cylinder inking rollers known, wherein a color coming from the ink fountain ink stream is provided in a main stream and in a sidestream dividing paint flow separation roller, wherein in the main stream and in the Side flow is arranged in each case one of the ink jet separating roller on at least one of the inking rollers ink transfer roller friction.
- the roller between the ink fountain roller and the ink flow separating roller comprises four rollers arranged in series and is thus relatively long, so that a relatively thick ink layer is to be applied to the ink roller in the roller following a relatively thick ink layer when the inking rollers to apply a very specific amount of ink on the printing cylinder ,
- the ink layer thickness on the nip downstream roller is indeed lower, but the respective ink layer thickness is necessarily relatively high at least on the first of the four near the ink reservoir rollers due to the many cleavages to the printing cylinder, which is just In a high-speed rotary printing machine leads to increased color mist.
- WO 2004/024451 A1 is an inking unit of a rotary printing machine with a printing ink from a ink reservoir receiving ink fountain roller and a plurality of ink on a printing unit cylinder-applying inking rollers known, with a coming from the ink fountain ink stream in a main stream and in a By-pass dividing ink flow separating roller is provided, wherein in the main stream and in the side stream each one of the ink flow separation roller on at least one of the inking rollers ink transfer roller is arranged, wherein the ink to be fed into the compactor ink is applied with a chamber doctor blade directly to the ink flow separation roller.
- the ink flow separation roller is designed as an anilox roller.
- Such a short inking unit has no means for zone-wise color quantity metering and is only suitable for use in conjunction with a damp-proof dry offset printing method.
- a rotary bearing bearing block By the DE 10 2004 037 889 A1 a device for supporting a cylinder of a printing unit with a movable along a travel in linear bearings, a rotary bearing bearing block is known, wherein the bearing is designed as a bearing unit in the manner of a mountable assembly as a whole, which comprises both the bearing in addition to the rotation bearing bearing elements, which allow the relative movement of the bearing block.
- a paint roller with a formed as a sleeve shell part of a microporous elastomeric material is known, wherein in the z. B. consisting of foam rubber casing part a plurality of cavities, wherein the cavities have substantially different sizes, which are within a predetermined size range, which is intended with this ink roller, in particular at a higher peripheral speed of at least 305 m / min. to avoid throwing away color spray mist.
- a hard-surface fluid roll wherein on the outer surface of the cylindrical core a hard metal coating z. B. chrome z. B. is applied with a thickness of up to 0.5 mm, wherein in this coating by etching a random pattern of interconnected columns and intermediate, separate islands is formed, wherein the interconnected columns occupy up to 30% of the surface of the fluid roller, wherein the column has a depth z. B. up to 0.075 mm, said fluid roller cooperates for the transport of the fluid with another roller, said further roller having a soft lateral surface, wherein both rollers are employed against each other.
- US 45 37 127 A is an ink roller formed from steel whose outer surface is structured by engraving preferably with intersecting lines in a cell pattern, surface hardened by nitriding and then subjected to an oxidation process, wherein the oxidation process on the outer surface of the roller an outer mainly of Fe 3 O 4 existing layer is formed.
- a printing unit having at least one ink fountain roller inking unit, wherein in the inking unit between a printing ink from a ink fountain ink fountain roller and Farbstromtrennwalze only a single roller is arranged, said roller is formed as a film roll, wherein the film roller has a lateral surface having a structure having.
- a film roll for inking machines of rotary printing machines wherein the film roll has a surface provided with a thin hard rubber layer, wherein the hard rubber layer has a hardness of 80 to 85 Ā° Shore.
- the invention has for its object to provide an arrangement in a printing unit of a rotary printing machine, which is particularly suitable for use in a newspaper printing press, and has a compact, fast-reacting in the ink metering inking.
- the advantages that can be achieved with the invention are in particular that the proposed arrangements also contribute to the production of a printed product with a high print quality under the conditions of use in a high-speed rotary printing press. They also allow a short time executable change of several arranged on the forme cylinder printing forms. If the arrangements are completed to an employee employed to the forme inking unit, this inking unit is wear-resistant even at a transport speed of a printed in this rotary printing material of more than 10 m / s and this inking is also less prone to color fogging.
- this has a lateral surface with a hardness of at least 60 Shore D, preferably over 70 Shore D, in particular in the range of 80 to 90 Shore D, so they under the conditions of use in a high-speed rotary printing machine with a transport speed of the printing substrate of more than 10 m / s is less wear than a conventional film roll, z.
- a film roll having a hard rubber layer having a lateral surface Because the aforementioned high values for the hardness of the lateral surface of a film roll can not be achieved by rubber materials become.
- Rilsan ie a polyamide of 11-aminoundecanoic acid (Rilsan B, PA 11) or ā -laurolactam (Rilsan A, PA 12), said polyamide materials having a hardness of at least 60 Shore D, preferably about 70 Shore D, where particularly high values for the hardness are achieved by the fact that the polyamide material in question is reinforced by glass fibers. It is noteworthy that in the inking unit between the ink fountain roller and the Farbstromtrennwalze there is a very large difference in the respective peripheral speeds, so that the lateral surface of the arranged between the ink fountain roller and the Farbstromtrennwalze film roller is exposed to high mechanical and possibly thermal stress.
- Forming the circumferential surface of a film roll having a stochastic structure is advantageous because a film roll having a shell surface having a stochastic structure has a very favorable ink conveying performance, which contributes to the production of a printed product having a high print quality.
- the proposed way of introducing the stochastic structure into the surface of the film roll is very advantageous, because shot peening is a very cost-effective processing method.
- the Farbduktor due to the shortness of the ink to the printing cylinder transporting compactor, ie record the lower number of Farbspaltstellen, only a comparatively thin ink layer from the ink reservoir and must apply to the ink ductor downstream roller to the amount required on the printing cylinder To provide printing ink. Accordingly, are the color layers on the rollers mainly causing a color mist, ie in particular relatively thin on the film roller, which is why the proposed inking unit also tends to fog when used in a high-speed rotary printing machine with a transport speed of printed in this rotary printing material of more than 10 m / s ,
- the features proposed with regard to the film roll lead to a film roll which, under the conditions of use in a high-speed rotary printing press, has a long service life and very good ink transfer behavior together with a low color fogging and is also inexpensive to produce.
- Another advantage is that the proposed arrangements due to the short compactor in an ongoing production process quickly to a z. B. at one or more color zones changed setting of the ink dosage reacts, so that a waste produced to stable provision of the new amount of ink waste can be reduced.
- an inking unit formed from the proposed arrangements only provides a relatively small ink volume in its comparatively short compactor, as a result of which the washing times associated with cleaning the inking unit can be kept short. Short washing times are counteracted by the demand, in particular for newspaper customers, for short set-up times, because the washing times are part of the set-up times.
- Conventional newspaper printing machines have so far usually only two inking rollers. Three inking rollers, however, better even out the application of paint than just two inking rollers. Also, they better even out a stencil forming on the inking rollers in their respective color film, so that an inking unit having three or more inking rollers is less prone to stenciling.
- Under stenciling is understood to be a shadow-like repeating in the printing direction of the printing cylinder, undesirable image of a front of the printed image part.
- the image shows a higher or lower coloration compared to the environment.
- Stenciling is influenced by the color distribution in the inking unit, in particular by the color distribution on the inking rollers. If a previously impressed color profile is not sufficiently degraded, ie evened, by color cleavage due to the image on the printing plate before the next inking, ie revolution of the inking rollers, a partial transfer of the already printed image section to another of the image part to be printed on the printing substrate.
- FIG. 1 an example of a part of a printing unit of a rotary printing machine is shown.
- the rotary press operates in a wet offset printing process. Their use is intended especially in newspaper printing.
- the printing unit has as a printing cylinder 01; 02 at least one transfer cylinder 01 and a cooperating with this transfer cylinder 01 form cylinder 02.
- the transfer cylinder 01 generates with each its revolutions on a substrate, not shown, preferably on a material web, in particular on a paper web, at least one printed image.
- operating case of the printing unit are employed at the forme cylinder 02 at least one inking unit and a dampening unit.
- the inking unit has a plurality, preferably at least three inking rollers 03; 04; 06, which are employed in a current production process of the rotary printing machine to the forme cylinder 02. Between a printing ink from a ink reservoir 07 receiving ink fountain roller 08 and the ink on the forme cylinder 02 applying inking rollers 03; 04; 06 are several rollers 09; 11; 12; 13 arranged. The roller 09 next to the ink fountain roller 08 in the transporting direction of the ink is formed as a film roller 09.
- a roller 11 formed as a ink flow separating roller 11 which divides a paint stream A coming from the ink fountain roller 08 into a main stream B and a sub-stream C.
- Fig. 1 is the leading to the forme cylinder 02 course of the main flow B by a solid line and also leading to the forme cylinder 02 course of the secondary flow C indicated by a dashed line.
- the main stream B and the secondary stream C is one of the ink flow separation roller 11 on at least one of the inking rollers 03; 04; 06 ink transferring roller 12; 13, said roller 12; 13 each as a rubbing roller 12; 13 is formed.
- the two friction rollers 12; 13 perform a running in their respective axial direction traverse stroke, the traverse stroke of a friction roller 12 z. B. may be coupled by a lever arrangement with the traverse stroke of the other friction roller 13.
- the traverse stroke of the respective friction roller 12; 13 generated by independent drives. In both drive variants, the two traversing strokes can be designed in opposite directions.
- the traverse stroke dei respective friction roller 12; 13 can z. B. be generated by means of a gear from the rotational movement.
- Both in the main stream B and in the secondary stream C ink taken from the ink reservoir 07 is in each case lined up by means of a five-row Rollers 08; 09; 11; 12; 13; 03; 04; 06 having roller train applied to the forme cylinder 02, wherein the ink fountain roller 08, the film roller 09, the Farbstromtrennwalze 11, one of the friction rollers 12; 13 and one of the inking rollers 03; 04; 06 are each part of each of the forme cylinder 02 leading roller train. Accordingly, only a single roller 09 is arranged in the roller train between the ink fountain roller 08 and the ink flow separating roller 11, this roller 09 being designed as a film roller 09, wherein the film roller 09 has a special feature with regard to its lateral surface, which will be discussed later.
- the main stream B is that part of the color ink coming from the ink fountain roller 08 A, which is removed in the direction of rotation of the ink flow separation roller 11 of this ink flow separation roller 11 and forwarded as the first arranged in this main flow B friction roller 12 in the direction of the forme cylinder 02.
- the part of coming from the ink duct 08 color flow A which is downstream of the main stream B in the direction of rotation of the ink flow separation roller 11 removed from this ink flow separating roller 11 and forwarded in the direction of the forme cylinder 02, is referred to as the secondary stream C taken from the ink reservoir 07 ink.
- the secondary flow C can turn into further partial streams D; E be divided if at the arranged in the secondary flow C friction roller 13 more, in particular two of the inking rollers 03; 04; 06 are employed. Since the main stream B of coming from the ink duct 08 color flow A the forme cylinder 02 in the direction of rotation first, ie at least spatially before the side stream C and its partial streams D; E reached, such an inking unit is referred to as front-heavy. The in the flow C of color coming from the ink duct 08 color flow A ink is transported z. B. applied to the pre-colored by the main stream B forme cylinder 02.
- the ink reservoir 07, from which the ink fountain roller 08 removes the ink to be transported to the forme cylinder 02 is, for. B. formed as a paint box 07 or as a paint tray 07, wherein strung together on the ink fountain 07 or on the paint tray 07 in the axial direction of the ink duct 08 more, z. B. thirty to sixty paint knives (not shown) are provided, which are each preferably remotely adjustable with an adjusting means, not shown in their respective employment of the ink fountain roller 08 and actually employed, whereby a zonewise metering of the ink ductor 08 recorded ink is possible.
- the adjustment made with the setting of the respective color meter dosage of the amount of color manifests itself in a proportional to this setting layer thickness of the ink in the relevant zone on the lateral surface of the Farbduktors 08.
- the inking unit is therefore formed in the preferred embodiment as a zone inking unit.
- the rollers 03; 04; 06; 08; 09; 11; 12; 13 of the inking unit have in their respective axial direction a length z. B. in the range of 500 mm to 2,600 mm, in particular in the range of 1,400 mm to 2,400 mm.
- Your outer diameter is z. B. in the range between 50 mm and 300 mm, preferably between 80 mm and 250 mm.
- the ink flow separation roller 11 has a lateral surface preferably made of an elastic material, for. B. made of a rubber.
- the elastomer material of the ink flow separation roller 11 may have a layer thickness z. B. in the range between 1 mm and 20 mm, preferably between 5 mm and 15 mm.
- the lateral surface of the paint flow separation roller 11 is preferably formed with a hardness in the range between 40 and 80 Shore A, in particular in the range between 50 and 60 Shore A, this measure of the hardness is defined according to DIN 53505. The higher the value of this hardness specification, the greater the hardness of the material used in this case for the lateral surface of the paint flow separation roller 11.
- the film roller 09 has a special feature of its lateral surface on a lateral surface with a stochastic structure, d. H. a lateral surface with an irregular distribution of elements structuring this surface, which i. d. R. have a non-uniform shape and also no particular preferred direction.
- the lateral surface of the film roller 09 is preferably made of a plastic, preferably of a polyacrylate or polyamide, in particular of Rilsan, or in an alternative embodiment of copper.
- the lateral surface of the film roller 09 is comparatively hard and has a hardness of at least 60 Shore D, preferably over 70 Shore D, in particular in the range of 80 to 90 Shore D, whereby this measure of the hardness is defined according to DIN 53505.
- the stochastic structure is introduced in the preferred embodiment of the film roller 09 in their originally smooth and homogeneously formed lateral surface by shot peening, which is a particularly simple and therefore cost-effective production of advantageous for the transport of printing ink surface of this film roller 09.
- Shore A there is no linear correlation between the Shore A and Shore D hardness test methods.
- An appendix to DIN 53505 can be taken from a purely technical point of view that a hardness of 80 Shore A corresponds to approx. 30 Shore D.
- the lateral surface of the friction rollers 12; 13 may each be made of plastic, preferably of a polyamide, in particular of Rilsan.
- the lateral surface of the friction rollers 12; 13 is smooth and without a stochastic structure.
- the inking rollers 03; 04; 06 each preferably have a lateral surface made of an elastomeric material, preferably made of a rubber, which according to DIN 53505 defined hardness of these lateral surfaces is preferably in the range between 35 and 60 Shore A.
- the lateral surface of the ink ductor 08 which is preferably immersed in printing ink, may be a steel or a ceramic layer applied to a material forming the core of the ink ductor 08.
- the stochastic structure of the lateral surface of the film roller 09 is preferably formed by embedded in this lateral surface cavities and depressions, which each form structural elements, wherein the cavities and depressions in the radial direction of the film roller 09 has a depth in the range of z. B. 50 microns and 400 microns may be, this depth is formed unevenly with respect to the distributed on the lateral surface of the film roller 09 structural elements.
- the film roller 09 as a rotation body actually limiting cylindrical surface has a roughness with an absolute surface roughness R t z. B. in the range of 100 microns to 120 microns and with an average roughness R z z. B. in the range of 60 microns to 80 microns, these values z. B.
- a calculated according to DIN 4776 from an Abbott curve smallest material content Mr1 (corresponding to a supporting portion of the tips) of the lateral surface of the film roller 09 is z. In the range between 7% and 13%, preferably between 9% and 11%.
- a according to DIN 4776 from the same Abbott curve determined largest material content Mr2 (corresponding to a supporting portion of the grooves) of the lateral surface of the film roller 09 is z. In the range between 80% and 95%, preferably between 85% and 90%.
- Each of the open on the lateral surface of the film roller 09 cavities and / or depressions forms with respect to the cylindrical reference surface, ie with respect to the closed and smooth-walled imaginary cylindrical surface, a blank, wherein the empty space the opening cross section of the respective cavity or the respective recess in the Level of the reference surface corresponds.
- the sum of the empty areas of all existing on the lateral surface of the film roller 09 cavities and / or Recesses forms a void fraction relative to the closed cylindrical surface, the void fraction being at most 35% of this cylindrical surface and preferably between 20% and 30%.
- the cavities and / or depressions of the film roller 09 form a void volume, the void volume of all cavities and / or depressions present per m 2 of imaginary cylindrical surface being at least 50,000 mm 3 , preferably at least 100,000 mm 3 , in particular at least 150,000 mm 3 .
- the arranged on the lateral surface of the film roller 09 cavities and / or depressions thus structure with their respective Leer schizophreniaanteil and with their respective void volume, the lateral surface of the film roller 09 and form a relief there, said relief z.
- B. is tunable to the rheological behavior of the ink to be transported, in particular the viscosity and / or the tack of the ink to be transported, so that the operations of filling and emptying of the cavities and / or depressions with the ink to be transported and arresting the transporting ink are optimized during their respective transport from the ink fountain roller 08 to the ink flow separation roller 11 in response to a provided for this film roller 09 on its lateral surface rotational speed, wherein a rotational speed of the film roller 09 conditional transport speed of the printed in this rotary printing press substrate z.
- a double circumferential cylinder has along its circumference two preferably equally long section lengths, each section length z. B. corresponds to a height of a newspaper page to be printed.
- Both cooperating printing cylinder 01; 02 preferably have a magnitude equal in magnitude.
- a further formed as a doctor roller 14 roller 14 may be employed or at least be employable, wherein the doctor roller 14th a squeegee 16 is employed.
- the squeegee roller 14 is set to the ink flow separation roller 11 in the direction of rotation after the branch of the secondary flow C.
- the scraped from the doctor roller 14 with the doctor blade 16 excess ink is z. B. returned to the ink reservoir 07, which in the Fig. 1 is indicated by the doctor blade 14 in the direction of rotation below the doctor blade 16 dripping ink.
- a bridge roller 17 may be provided, wherein the bridge roller 17 at the same time to one of the inking rollers 03 and to a z. B. as a dampening roller 18 formed roller 18 of an adjustable to the forme cylinder 02 dampening unit is employed or at least employable.
- the bridge roller 17 can preferably be adjusted to an inking roller 03 arranged in the main flow B. It smoothes again leading to the forme cylinder 02 main stream B coming from the ink fountain roller 08 color flow A.
- the dampening unit is preferably as a dampening contactless applying moisturizing, z. B.
- a spray dampening unit formed as a spray dampening unit, so that it has a spray bar 19, wherein preferably a plurality of arranged in the spray bar 19 spray nozzles the dampening solution to a z. B. sprayed as a dampening drive roller 21 roller 21 of the dampening unit. That on the Dampening drive roller 21 sprayed dampening solution is from another z. B. as a smoothing roll 22 formed roller 22 of the dampening unit on the dampening roller 18 and transferred from there to the forme cylinder 02.
- the lateral surface of the dampening applicator roll 18 is preferably formed from an elastomeric material, preferably made of a rubber, wherein the defined according to DIN 53505 hardness of this lateral surface is preferably in the range between 25 and 30 Shore A and thus is relatively soft.
- the lateral surface of the smoothing roller 22 is formed of chromium
- the lateral surface of the dampening drive roller 21 is formed of a relatively soft elastomeric material, preferably of a rubber, wherein the defined according to DIN 53505 hardness of this lateral surface preferably in the range between 25 and 30 Shore A is.
- the lateral surface of the smoothing roller 22 is also formed of an elastomeric material
- the lateral surface of the smoothing roller 22 and the dampening roller 21 are preferably made of the same elastomeric material, for. B. made of a rubber, wherein the defined according to DIN 53505 hardness of these lateral surfaces is preferably in the range between 40 and 60 Shore A.
- de outer surface of the dampening drive roller 21 is harder in the second alternative than in the first alternative. Whether the first or the second alternative is used depends on how the rollers 18; 21; 22 of the dampening unit are driven.
- the smoothing roller 22 a separate drive 57, z. B. an electric motor 57, which in the Fig.
- the bridge roller 17 is an independent drive 56, z.
- an electric motor 56 wherein the rotating bridge roller 17 exerts a torque on the cooperating with their dampening roller 18, which in turn by friction, the smoothing roller 22, which then ultimately dampening roller 21 drives.
- the smoothing roller 22 is preferably formed iridescent.
- the traverse stroke extending in the axial direction of this smoothing roller 22 can be generated by a separate drive or the traversing motion is coupled to the drive for the rotational movement of this smoothing roller 22, so that the traverse stroke is derived by a gear from the rotational movement.
- Fig. 1 is the direction of rotation of the respective rollers 03; 04; 06; 08; 09; 11; 12; 13; 14 of the inking unit, the bridge roller 17, the rollers 18; 21; 22 of the dampening unit and the printing cylinder 01; 02 each indicated by an associated arrow.
- the printing cylinder 01; 02 are each with a drive 51; 52, z. B. an electric motor 51; 52 connected, these drives 51; 52 individually and independently controlled or regulated.
- In the inking unit is only one of the friction rollers 12; 13, namely either the friction roller 12 or the friction roller 13 by a drive 53; 54, z. B. an electric motor 53; 54 driven.
- Fig. 1 is the direction of rotation of the respective rollers 03; 04; 06; 08; 09; 11; 12; 13; 14 of the inking unit, the bridge roller 17, the rollers 18; 21; 22 of the dampening unit and the printing cylinder 01; 02 each indicated by an associated arrow.
- the printing cylinder 01; 02 are each with a
- the preferred embodiment is shown in which the friction roller 12 is driven and the friction roller 13 has no motor.
- a drive 53 is shown only in dashed lines.
- the remaining rollers 03; 04; 06; 08; 09; 11; 14 of the inking unit are friction-driven and thus do not have their own motor drive.
- the upper rubbing roller 13 is pivoted by a mechanical device in a direction that increases its axial distance a13 to the forme cylinder 02, so that the central inking roller 04 substantially by a vertically upward movement from the area between the forme cylinder 02 and the upper friction roller 13 can be removed.
- the uppermost inking roller, 06 of the inking unit is arranged such that in its applied to the forme cylinder 02 operating state applied to the circumference of this inking roller 06 horizontal tangent T06 of a voltage applied to the circumference of the forme 02 horizontal tangent T02 at a vertical distance a06 of at least 50 mm.
- This vertical distance a06 forms, so to speak, an offset between the uppermost inking roller 06 and the forme cylinder 02.
- This arrangement results from an operating page of the printing from sufficient accessibility to the forme cylinder 02, especially since all other belonging to the inking rollers 03; 04; 08; 09; 11; 12; 13; 14 are arranged well below the applied to the circumference of the uppermost inking roller 06 horizontal tangent T06.
- the rollers 18; 21; 22 of the dampening unit are arranged substantially below the forme cylinder 02 and also do not limit the accessibility to the forme cylinder 02.
- the accessibility to the forme cylinder 02 must z. B. therefore be given in order to change on the lateral surface of the forme cylinder 02 in the shortest possible time one or more printing plates.
- a change of printing plates can be effected manually on the forme cylinder 02 by an operator operating the printing machine or automatically with the aid of a printing form magazine 58 preferably tangentially attached to the forme cylinder 02. Fig. 8 ).
- Fig. 2 and 3 show in a schematic sketch again in the Fig. 1 represented part of a printing unit, now in particular the storage of the printing cylinder 01; 02 and a respective adjustment of the inking rollers 03; 04; 06, the film roller 09, the ink flow separation roller 11, the dampening roller 18 and the dampening drive roller 21 are highlighted.
- Fig. 2 and 3 is different in each case Fig. 1
- a representation of the doctor roller 14 and the bridge roller 17 has been dispensed with.
- the representations in the Fig. 2 and 3 differ in that Fig. 2 shows a first operating state with preferably each closed compactors, which means that z. B.
- FIG. 3 shows, however, a second operating state with preferably each open, ie interrupted by a gap pulleys, which means that z. B. the inking rollers 03; 04; 06 and / or the dampening roller 18 are turned off at least from the forme cylinder 02.
- All rollers 03; 04; 06; 08; 09; 11; 12; 13; 14 of the inking unit, the rollers 18; 21; 22 of the dampening unit, the bridge roller 17 and the printing cylinder 01; 02 are each arranged in spaced-apart, opposite side frames 47; 48 of the printing machine ( Fig. 5 rotatably mounted, wherein at least the inking rollers 03; 04; 06 and the dampening roller 18, but preferably also the film roller 09 and the ink flow separating roller 11 of the inking unit and the dampening roller 21 of the dampening unit are each arranged radiallyhubtext.
- the radial stroke of these rollers 03; 04; 06; 09; 11; 18; 21 refers to the fact that the respective axis of these rollers 03; 04; 06; 09; 11; 18; 21 or at least one of the ends of these rollers 03; 04; 06; 09; 11; 18; 21 opposite one to the respective roller 03; 04; 06; 09; 11; 18; 21 belonging frame-fixed bearing point is eccentrically adjustable.
- the eccentric adjustment of each of the rollers 03; 04; 06; 09; 11; 18; 21 takes place in each case with the aid of preferably several, z. B. four each symmetrical and concentric about the respective axis of these rollers 03; 04; 06; 09; 11; 18; 21 arranged actuators 23, as exemplified in the Fig.
- actuators 23 are actuated simultaneously, resulting from the axis of the respective roller 03; 04; 06; 09; 11; 18; 21 executed radial stroke of a vector sum of the respective radial force of actuated actuators 23.
- the actuators 23 are z. B. subjected to a pressure medium; Preferably, they are pneumatically operated.
- the actuators 23 are z. B. in each case one end of the respective roller 03; 04; 06; 09; 11; 18; 21 receiving roller lock arranged.
- the from the axis of the respective roller 03; 04; 06; 09; 11; 18; 21 executable Radialhub is preferably in the range of a few millimeters, z. B, it is up to 10 mm, which is sufficient to the respective roller 03; 04; 06; 09; 11; 18; 21 of at least one adjacent cylindrical rotary body, for. B. the forme cylinder 02, turn off. It is also envisaged that with the respective actuators 23 one of the respective roller 03; 04; 06; 09; 11; 18; 21 is applied against its at least one adjacent rotating body applied contact pressure, the degree of the set contact force by the controlled with this setting transport of ink or dampening influences the quality of the printed product generated in connection with this inking and / or dampening.
- the contact force is built up when already touch contact between the respective roller 03; 04; 06; 09; 11; 18; 21 and its adjacent rotary body, but still by the operation of one or more actuators 23, the at least one effective radial force is increased.
- an existing contact force in its amount changed, for. B. also be reduced.
- one of the rollers 03; 04; 06; 09; 11; 18; 21 exerts on its adjacent body of revolution, is also a width of a touching contact between this roller 03; 04; 06; 09; 11; 18; Set 21 and the adjacent rotary body forming roller strip, wherein the roller strip as a flattening on the lateral surface of the roller 03; 04; 06; 09; 11; 18; 21, on the lateral surface of the roller 03; 04; 06; 09; 11; 18; 21 cooperating cylindrical rotating body or on the lateral surface of both represents.
- the width of the roller strip is the chord forming by the flattening on the otherwise circular cross-section of the roller 03; 04; 06; 09; 11; 18; 21 or of the co-rotating body.
- the flattening is due to an elastically deformable lateral surface of the roller 03; 04; 06; 09; 11; 18; 21 or the cooperating with her rotary body possible.
- a roll strip is also referred to as a nip point.
- values for their respective pressure level can be stored, to which the respective actuators 23 are set to for a particular roller 03; 04; 06; 09; 11; 18; 21 form a roller strip of a certain width to its adjacent body of revolution by the contact force resulting from the respective setting of the actuators 23.
- the printing cylinder 01; 02, ie the transfer cylinder 01 and the forme cylinder 02 are, as shown in the Fig. 2 and 3 each mounted in a storage unit 24, preferably both ends of the respective printing cylinder 01; 02 are each stored in such a storage unit 24.
- the storage unit 24 allows the respective printing cylinder 01; 02 a linear travel S, this travel S is preferably aligned horizontally in a printing unit with substantially vertical guidance of the printing material. Details of the preferably used storage unit 24 are in the Fig. 4 shown.
- the one on / Abstellmechanismus for the respective printing cylinder 01; 02 integrating storage unit 24 has in addition to a bearing 26, z. B. radial bearing 26, for example, a cylindrical roller bearing 26, for rotatably supporting the respective printing cylinder 01; 02 storage means 27; 28 for a radial movement of the respective printing cylinder 01; 02 - for pressure on or pressure off - on.
- the bearing unit 24 after its installation in or on a frame of the printing press frame-fixed, carrier-fixed bearing elements 27 and the movable against these bearing elements 28.
- the carrier-fixed and movable bearing elements 27; 28 are as cooperating linear elements 27; 28 and formed together with corresponding sliding surfaces or intermediate rolling elements in total as a linear bearing.
- the linear elements 27; 28 take in pairs a radial bearing 26 receiving, z. B. as a carriage 29 formed bearing block 29 between them. Bearing block 29 and the movable bearing elements 28 may also be made in one piece.
- the carrier-fixed bearing elements 27 are arranged on a support 31, which in total with one of the side frames 47; 48 ( Fig. 5 ) is connected.
- the carrier 31 is embodied, for example, as a carrier plate which, for example, at least on a drive side of the respective printing cylinder 01; 02 a recess for the passage of a shaft, z. B. a drive shaft of an in Fig. 4 Having not shown cylinder pin.
- the frame wall on the drive side preferably has a recess or an opening for a drive shaft. On the opposite side of the drive side does not necessarily have a recess or a recess in the side frame 47; 48 ( Fig. 5 ) be provided.
- a length of the linear bearing in particular at least a length of the frame-mounted in the mounted state bearing means 27 of the linear bearing, in the direction of the travel S considered smaller than a diameter of the associated printing cylinder 01; 02.
- the bearing block 29 preferably has only a single degree of freedom of movement in the direction of the travel S.
- the storage unit 24 which is preferably designed as a unit which can be assembled as a whole, forms z. B. an optionally partially open housing from z. B. the carrier 31 and / or z. B. a frame (in Fig. 4 without reference z. B. the four bearing unit 24 to all four sides outwardly limiting plates).
- a frame within this housing or this frame are the radial bearing 26 bearing block 29, the linear guides 27; 28 and in an advantageous embodiment, for. B. a bearing block 29 linearly adjusting actuator 32 or more such actuators 32 housed.
- the frame-fixed bearing elements 72 are arranged substantially parallel to each other and define the direction of the travel S ( Fig. 4 ).
- a pressure is applied by moving the bearing block 29 in the direction of the pressure point by means of a force F applied to the bearing block 29 by at least one actuator 32, in particular by at least one force-controlled actuator 32, by means of walchem for setting a defined or definable force F in Pressure-on direction on the bearing block 29 can be brought ( Fig. 4 ).
- the decisive for the color transfer and thus the print quality, inter alia, line force in the respective nip-site is therefore not by a travel, but by the balance of forces between the force F and between the printing cylinders 01; 02 resulting line force F L and the resulting equilibrium defined.
- the printing cylinder 01; 02 employed in pairs to each other by the bearing block 29 is acted upon by the corresponding set force F via the / the actuator (s) 32.
- the actuator (s) 32 are several (eg three or four) adjacent to each other in a direct neighboring each pairwise cooperating printing cylinder 01; 02 executed without a possibility for fixing or limiting the travel S with a purely force-dependent adjustment mechanism, so it is indeed a.
- At least the respective transfer cylinder 01 of the printing unit in a Anstelllage found by the equilibrium of forces can be fixed or at least wegbegrenzbar.
- the bearing unit 24 has on its side facing a pressure point - at least during the adjustment process - a positionable stop 33, which limits the travel S to the pressure point out.
- the stop 33 is spatially variable in such a way that an effective stop as a stop surface 34, whose Reference numerals in the Fig. 4 is shown in an outbreak of the bearing block 29, along the travel S at least in one area is variable. It is thus provided by adjustable stop 33 in an advantageous embodiment, an adjusting device by means of which the position of a pressure near the end position of the bearing block 29 is adjustable. For Wegbegrenzung / adjustment serves z. B. a wedge drive described below. The placement of the stop 33 can in principle be done manually or via an actuating means 36 designed as an actuator 36.
- Fig. 4 Hatte- or clamping means provided by means of which the stop 33 can be set in the desired position.
- at least one resilient element 37, z. B. spring element 37 is provided, which applies a force F R from the stop 33 in a direction away from there on the bearing block 29.
- the spring member 37 causes a pressure-Ab-places in the event that the bearing block 29 is not prevented in another way from the movement.
- the applied force F, the restoring force F R and the position of the stop 33 is selected such that no significant force .DELTA.F is transmitted between abutment 33 and the abutment surface of the bearing block 29 in the setting position ā F
- the contact force between the printing cylinders 01; 02 essentially determined by the force applied by the actuator 32 F.
- the decisive for the color transfer and thus the print quality, inter alia, line force F L in the respective nip point is therefore not primarily by a travel S, but defined at quasi-free stop 33 by the force F and the resulting balance. In principle, after finding the basic setting with the appropriate forces F, it would be conceivable to remove the stop 33 or a corresponding fixation effective only during the basic setting.
- the actuator 32 can in principle be designed as an arbitrary, a defined force F applying actuator 32.
- the actuator 32 is designed as actuatable by a pressure medium adjusting means 32, in particular as a movable piston 32 by a fluid.
- Advantageous in terms of possible tilting is the arrangement of several, here two, such actuators 32.
- As fluid is preferably because of their incompressibility a liquid, eg. As an oil or water, used.
- a controllable valve 38 is provided in the bearing unit 24. This is performed, for example, electronically controlled and provides a hydraulic piston in a first position without pressure or at least to a lower pressure level, while in another position a force F conditional pressure P is applied.
- a non-designated leakage line is provided here for safety.
- overload protection 39 z. B In order to avoid too large An- / Abstellwege and still hedge Bahnwickler, can on the druckstellenfemen side of the bearing block 29, a travel limit by a mobile, force-limited stop 39 as overload protection 39 z. B. be provided in conjunction with a spring element, which in the operative pressure-off position, ie the piston 32 are relieved and / or retracted, although serve as a stop 39 for the bearing block 29, in the case of a web winder or other from the pressure point
- a spring force of this overload protection 39 is therefore chosen to be greater than the sum of the forces from the spring elements 37.
- When operational on / off is therefore only a very short travel, z. B. only 1 mm to 3 mm, providable.
- the stop 33 is in the illustrated embodiment ( Fig. 4 ) as a transverse to the direction of the travel S movable wedge 33, wherein the same moves the position of the respective effective stop surface 34 along the travel S varies.
- the wedge 33 is supported for example on a carrier-fixed stop 41.
- a wedge 33 stop 33 is moved by an actuator 36, for example, by a pressure medium actuable actuating means 36, z.
- a pressure medium actuable actuating means 36 for example, by a pressure medium actuable actuating means 36, z.
- This actuator 36 can either be effective in both directions or, as shown here, be designed as a one-way actuator, which operates against a return spring 43 when activated ,
- the force of the return spring 43 is from o.
- G. Reasons (largely force-free stop 33) chosen so weak that the wedge 33 is held only against gravity or vibration forces in its correct position.
- the stop 33 can also be designed in a different way (for example as a plunger which can be adjusted and fixed in the direction of adjustment) in such a way that it has a stop surface 34 which can be fixed in the direction of the travel S and, at least during the setting process forms for the movement of the bearing block 29 in the direction of pressure point.
- a location of the stopper 33 is for example directly parallel to the direction of the travel S by a drive means, for example, a pressure medium actuated cylinder with (double-acting) piston or an electric motor.
- the Fig. 5 and 6 each show a printing tower 44 each having a plurality, z. B. eight of the in the Fig. 1 and 2 arrangements shown, each cooperating printing cylinder 01; 02 each have in conjunction with an employee employed on the respective form cylinder 02 inking and dampening unit.
- FIG. 5 are in a first operating state of the printing tower 44 each two of the in the Fig. 1 and 2 illustrated arrangements of cooperating printing cylinder 01; 02 together with their respective associated inking and dampening in a so-called rubber-rubber arrangement against each other employed, the nip point between the hired transfer cylinders 01 forms a pressure point.
- the printing tower 44 has z. B.
- each pair of side frames 47; 48 of the in the Fig. 5 and 6 illustrated printing tower 44 are each more, z. B. four in the Fig. 1 and 2 illustrated arrangements of cooperating printing cylinder 01; 02 together with their respective associated inking and dampening vertically arranged one above the other, which by this arrangement, the execution z. B. a four-color printing is possible.
- the (not shown) printing material preferably a material web, is preferably passed between the mutually employed transfer cylinders 01 from bottom to top through the printing tower 44 and can be printed on both sides at the same time.
- printing tower 44 may be part of a newspaper printing press.
- the printing tower 44 is arranged on a foundation 46. It can be provided that at least one of the pairs of side frames 47; 48 is linearly movable on the foundation 46.
- Fig. 5 shows the first operating state of the printing tower 44, in which both pairs of side frames 47; 48 are employed against each other. In this first operating state of the printing tower 44, the printing press, the production of a printed product, for. As a newspaper run.
- To perform manual work on the printing units is at each to the longitudinal direction of the printing cylinder 01; 02 and rollers 03; 04; 06; 08; 09; 11; 12; 13; 18; 21; 22 parallel outer side of the printing tower 44 each preferably a height-adjustable pedestal 49 is provided.
- the Fig. 6 shows the in the Fig. 5 illustrated printing tower 44 in a second operating state in which the pair of side frame 48 on the foundation 46 linearly from the example shown in this example as a stationary pair of side frame 47 moves away and thus, as well as a directional arrow with respect to the pair of side frame 48 indicates.
- the transfer cylinders 01 involved in the pressure points are parked from each other.
- the Fig. 7 also shows in the Fig. 5 illustrated printing tower 44 in its first operating state, in which in different pairs of side frames 47; 48 arranged and forming a common pressure point transfer cylinder 01 are employed against each other.
- printing tower 44 provided for performing a dampproof dry offset printing process, because the printing tower 44 of the Fig. 7 has no dampening units.
- linearly adjustable storage units 24 in each of which one of the printing cylinder 01; 02 of this printing tower 44 is stored, not shown. Also, for the same reasons has been waived in the Fig.
- each radialhubfuren bearings of the inking rollers 03; 04; 06 as well as preferably also the film roller 09 and the ink flow separating roller 11 of the respective inking units represent, because these bearings are each already in connection with the Fig. 2 been explained.
- the pairs of side frames 47; 48 be designed to be mutually adjustable, as it is z. B. in conjunction with the Fig. 6 has been explained.
- FIG. 8 shows again in connection with the Fig. 5 Illustrated printing tower 44, wherein now each form cylinder 02 is assigned in each case a printing forme magazine 58, which is shown in each case in a preferably tangentially employed to the respective forme cylinder 02 operating state.
- Each printing forme magazine 58 has at least one first shaft 59 for feeding at least one new printing forme to the forme cylinder 02 and preferably also a second shaft 61 for receiving at least one printing forme discharged from the forme cylinder 02.
- the two shafts 59; 61 define memory positions respectively for at least one printing form.
- These shafts 59; 61 are preferably each aligned substantially horizontally and arranged one above the other at a vertical distance.
- To fix a printing plate on the lateral surface of the forme cylinder 02 is at a short distance from the forme cylinder 02 to this preferably by a remote control z.
- B. a rolling element 63 is provided which temporarily fixes a printing forme to be supplied to the forme cylinder 02 in the assembly process.
- the eight arranged in the printing tower 44 form cylinder 02 are each occupied in a 6/2 occupancy with printing plates and all these printing plates for a production change are to change at the same time, so in the printing tower 44 a total of 96 printing plates must be replaced, resulting in an automated process can be done in less than two minutes.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
Description
Die Erfindung betrifft eine Anordnung in einem Druckwerk einer Rotationsdruckmaschine gemĆ¤Ć dem Oberbegriff des Anspruchs 1.The invention relates to an arrangement in a printing unit of a rotary printing press according to the preamble of claim 1.
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Der Erfindung liegt die Aufgabe zugrunde, eine Anordnung in einem Druckwerk einer Rotationsdruckmaschine zu schaffen, die insbesondere zur Verwendung in einer Zeitungsdruckmaschine geeignet ist, und ein kompaktes, in der Farbdosierung schnell reagierendes Farbwerk aufweist.The invention has for its object to provide an arrangement in a printing unit of a rotary printing machine, which is particularly suitable for use in a newspaper printing press, and has a compact, fast-reacting in the ink metering inking.
Die Aufgabe wird erfindungsgemĆ¤Ć durch die Merkmale des Anspruchs 1 gelƶst.The object is achieved by the features of claim 1.
Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, dass die vorgeschlagenen Anordnungen auch unter den Einsatzbedingungen in einer schnelllaufenden Rotationsdruckmaschine zur Erzeugung eines Druckerzeugnisses mit einer hohen DruckqualitƤt beitragen. Sie lassen zudem einen in kurzer Zeit ausfĆ¼hrbaren Wechsel mehrerer auf dem Formzylinder angeordneter Druckformen zu. Wenn die Anordnungen zu einem an den Formzylinder angestellten Farbwerk komplettiert werden, ist dieses Farbwerk auch bei einer Transportgeschwindigkeit eines in dieser Rotationsdruckmaschine bedruckten Bedruckstoffes von mehr als 10 m/s verschleiĆarm und dieses Farbwerk neigt auch weniger zum Farbnebeln. Bei Verwendung einer Filmwalze hat diese eine MantelflƤche mit einer HƤrte von mindestens 60 Shore D, vorzugsweise Ć¼ber 70 Shore D, insbesondere im Bereich von 80 bis 90 Shore D, sodass sie unter den Einsatzbedingungen in einer schnelllaufenden Rotationsdruckmaschine mit einer Transportgeschwindigkeit des zu bedruckenden Bedruckstoffes von mehr als 10 m/s verschleiĆƤrmer ist als eine herkƶmmliche Filmwalze, z. B. eine Filmwalze mit einer eine Hartgummischicht aufweisenden MantelflƤche. Denn die vorgenannten hohen Werte fĆ¼r die HƤrte der MantelflƤche einer Filmwalze kƶnnen von Gummiwerkstoffen nicht erreicht werden. Um fĆ¼r die vorgenannten Einsatzbedingungen eine verschleiĆharte MantelflƤche auszubilden, ist es vorteilhaft, als Werkstoff fĆ¼r die MantelflƤche ein Polyamid oder- ein Polyacrylat oder Kupfer auszuwƤhlen, denn diese Werkstoffe zeichnen sich durch eine hohe AbriebsbestƤndigkeit und auch AlterungsbestƤndigkeit aus, wobei sie gleichzeitig aufgrund ihrer Farbfreundlichkeit ein sehr gutes Farbannahme- und Farbabgabeverhalten besitzen. Besonders vorteilhaft ist die Verwendung von Rilsan, d. h. einem Polyamid aus 11-AminoundecansƤure (Rilsan B, PA 11) oder aus Ļ-Laurinlactam (Rilsan A, PA 12), wobei diese Polyamid-Werkstoffe eine HƤrte von mindestens 60 Shore D, vorzugsweise Ć¼ber 70 Shore D aufweisen, wobei besonders groĆe Werte fĆ¼r die HƤrte dadurch erreicht werden, dass der betreffende Polyamid-Werkstoff durch Glasfasern verstƤrkt ist. Es ist beachtlich, dass im Farbwerk zwischen dem Farbduktor und der Farbstromtrennwalze eine sehr hohe Differenz hinsichtlich der jeweiligen Umfangsgeschwindigkeiten besteht, sodass die MantelflƤche der zwischen dem Farbduktor und der Farbstromtrennwalze angeordneten Filmwalze einer hohen mechanischen und gegebenenfalls auch thermischen Belastung ausgesetzt ist.The advantages that can be achieved with the invention are in particular that the proposed arrangements also contribute to the production of a printed product with a high print quality under the conditions of use in a high-speed rotary printing press. They also allow a short time executable change of several arranged on the forme cylinder printing forms. If the arrangements are completed to an employee employed to the forme inking unit, this inking unit is wear-resistant even at a transport speed of a printed in this rotary printing material of more than 10 m / s and this inking is also less prone to color fogging. When using a film roll this has a lateral surface with a hardness of at least 60 Shore D, preferably over 70 Shore D, in particular in the range of 80 to 90 Shore D, so they under the conditions of use in a high-speed rotary printing machine with a transport speed of the printing substrate of more than 10 m / s is less wear than a conventional film roll, z. B. a film roll having a hard rubber layer having a lateral surface. Because the aforementioned high values for the hardness of the lateral surface of a film roll can not be achieved by rubber materials become. In order to form a wear-resistant lateral surface for the aforementioned conditions of use, it is advantageous to select a polyamide or a polyacrylate or copper as the material for the lateral surface, since these materials are distinguished by high abrasion resistance and also aging resistance, while at the same time offering a color-friendliness have very good ink acceptance and ink delivery properties. Particularly advantageous is the use of Rilsan, ie a polyamide of 11-aminoundecanoic acid (Rilsan B, PA 11) or Ļ-laurolactam (Rilsan A, PA 12), said polyamide materials having a hardness of at least 60 Shore D, preferably about 70 Shore D, where particularly high values for the hardness are achieved by the fact that the polyamide material in question is reinforced by glass fibers. It is noteworthy that in the inking unit between the ink fountain roller and the Farbstromtrennwalze there is a very large difference in the respective peripheral speeds, so that the lateral surface of the arranged between the ink fountain roller and the Farbstromtrennwalze film roller is exposed to high mechanical and possibly thermal stress.
Die MantelflƤche einer Filmwalze mit einer stochastischen Struktur auszubilden ist deshalb vorteilhaft, weil eine Filmwalze mit einer MantelflƤche mit einer stochastischen Struktur ein sehr gĆ¼nstiges Farbfƶrderverhalten aufweist, was zur Erzeugung eines Druckerzeugnisses mit einer hohen DruckqualitƤt beitrƤgt. DarĆ¼ber hinaus ist die vorgeschlagene Art der Einbringung der stochastischen Struktur in die MantelflƤche der Filmwalze sehr vorteilhaft, denn Kugelstrahlen ist ein sehr kostengĆ¼nstiges Bearbeitungsverfahren.Forming the circumferential surface of a film roll having a stochastic structure is advantageous because a film roll having a shell surface having a stochastic structure has a very favorable ink conveying performance, which contributes to the production of a printed product having a high print quality. In addition, the proposed way of introducing the stochastic structure into the surface of the film roll is very advantageous, because shot peening is a very cost-effective processing method.
Ferner ist vorteilhaft, dass der Farbduktor aufgrund der KĆ¼rze des Druckfarbe zum Druckwerkszylinder transportierenden Walzenzuges, d. h. der geringeren Zahl an Farbspaltstellen, nur eine vergleichsweise dĆ¼nne Farbschicht aus dem Farbreservoir aufnehmen und auf der dem Farbduktor nachgeordneten Walze auftragen muss, um die am Druckwerkszylinder benƶtigte Menge an Druckfarbe bereitzustellen. Demzufolge sind die Farbschichten auf den hauptsƤchlich einen Farbnebel verursachenden Walzen, d. h. insbesondere auf der Filmwalze relativ dĆ¼nn, weshalb das vorgeschlagene Farbwerk auch bei einem Einsatz in einer schnelllaufenden Rotationsdruckmaschine mit einer Transportgeschwindigkeit des in dieser Rotationsdruckmaschine bedruckten Bedruckstoffes von mehr als 10 m/s weniger zum Farbnebeln neigt.Further, it is advantageous that the Farbduktor due to the shortness of the ink to the printing cylinder transporting compactor, ie record the lower number of Farbspaltstellen, only a comparatively thin ink layer from the ink reservoir and must apply to the ink ductor downstream roller to the amount required on the printing cylinder To provide printing ink. Accordingly, are the color layers on the rollers mainly causing a color mist, ie in particular relatively thin on the film roller, which is why the proposed inking unit also tends to fog when used in a high-speed rotary printing machine with a transport speed of printed in this rotary printing material of more than 10 m / s ,
Die im Hinblick auf die Filmwalze vorgeschlagenen Merkmale fĆ¼hren demnach zu einer Filmwalze, die unter den Einsatzbedingungen in einer schnelllaufenden Rotationsdruckmaschine eine hohe Standzeit sowie ein sehr gutes Farbfƶrderverhalten zusammen mit einem geringen Farbnebeln aufweist und zudem kostengĆ¼nstig herstellbar ist.Accordingly, the features proposed with regard to the film roll lead to a film roll which, under the conditions of use in a high-speed rotary printing press, has a long service life and very good ink transfer behavior together with a low color fogging and is also inexpensive to produce.
Ein weiterer Vorteil besteht darin, dass die vorgeschlagenen Anordnungen aufgrund des kurzen Walzenzuges in einem laufenden Produktionsprozess schnell auf eine z. B. an einer oder mehreren Farbzonen verƤnderte Einstellung der Farbdosierung reagiert, sodass eine bis zur stabilen Bereitstellung der neuen Farbmenge produzierte Makulaturmenge reduzierbar ist.Another advantage is that the proposed arrangements due to the short compactor in an ongoing production process quickly to a z. B. at one or more color zones changed setting of the ink dosage reacts, so that a waste produced to stable provision of the new amount of ink waste can be reduced.
Ćberdies ergibt sich der Vorteil, dass ein aus den vorgeschlagenen Anordnungen gebildetes Farbwerk in seinem vergleichsweise kurzen Walzenzug nur ein relativ geringes Farbvolumen vorhƤlt, wodurch auch die mit einer Reinigung des Farbwerks einhergehenden Waschzeiten kurz gehalten werden kƶnnen. Kurze Waschzeiten kommen der insbesondere von im Zeitungsdruck tƤtigen Kunden erhobenen Forderung nach kurzen RĆ¼stzeiten entgegen, denn die Waschzeiten sind Teil der RĆ¼stzeiten.Moreover, there is the advantage that an inking unit formed from the proposed arrangements only provides a relatively small ink volume in its comparatively short compactor, as a result of which the washing times associated with cleaning the inking unit can be kept short. Short washing times are counteracted by the demand, in particular for newspaper customers, for short set-up times, because the washing times are part of the set-up times.
Ein vorderlastiges Farbwerk mit mehreren, z. B. mindestens drei Farbauftragswalzen, wie es hier vorgeschlagen wird, erzeugt auf dem Druckwerkszylinder, an den die Farbauftragswalzen angestellt sind, bzw. auf der mindestens einen Druckform, die auf diesem Druckwerkszylinder angeordnet ist, einen gleichmƤĆigen Farbauftrag, was fĆ¼r die QualitƤt des Druckerzeugnisses, das in der dieses Farbwerk aufweisenden Druckmaschine produziert wird, ein wesentliches Kriterium ist. Klassische Zeitungsdruckmaschinen weisen bisher Ć¼blicherweise nur zwei Farbauftragswalzen auf. Drei Farbauftragswalzen vergleichmƤssigen den Farbauftrag jedoch besser als nur zwei Farbauftragswalzen. Auch vergleichmƤssigen sie eine sich auf den Farbauftragswalzen in ihrem jeweiligen Farbfilm ausbildende Schablone besser, sodass ein Farbwerk mit drei oder mehr Farbauftragswalzen weniger zum Schablonieren neigt. Unter Schablonieren versteht man eine sich in Druckrichtung des Druckwerkszylinders schattenartig wiederholende, nicht erwĆ¼nschte Abbildung eines davor liegenden Druckbildteiles. Die Abbildung zeigt sich durch eine hƶhere oder niedrigere FƤrbung im Vergleich zum Umfeld. Schablonieren wird durch die Farbverteilung im Farbwerk beeinflusst, insbesondere durch die Farbverteilung auf den Farbauftragswalzen. Ist ein zuvor aufgeprƤgtes Farbprofil durch FarbrĆ¼ckspaltung aufgrund des Bildes auf der Druckform vor der nƤchsten EinfƤrbung, d. h. Umdrehung der Farbauftragswalzen, nicht genĆ¼gend abgebaut, d. h. vergleichmƤĆigt, so erfolgt ein teilweiser Ćbertrag des bereits gedruckten Bildabschnittes in einen anderen des auf dem Bedruckstoff zu druckenden Bildteil.A front-heavy inking unit with several, z. B. at least three inking rollers, as proposed here, generated on the printing cylinder to which the inking rollers are employed, or on the at least one printing plate, which is arranged on this printing cylinder, a uniform application of paint, which for the Quality of the printed product, which is produced in the printing press having this inking unit, is an essential criterion. Conventional newspaper printing machines have so far usually only two inking rollers. Three inking rollers, however, better even out the application of paint than just two inking rollers. Also, they better even out a stencil forming on the inking rollers in their respective color film, so that an inking unit having three or more inking rollers is less prone to stenciling. Under stenciling is understood to be a shadow-like repeating in the printing direction of the printing cylinder, undesirable image of a front of the printed image part. The image shows a higher or lower coloration compared to the environment. Stenciling is influenced by the color distribution in the inking unit, in particular by the color distribution on the inking rollers. If a previously impressed color profile is not sufficiently degraded, ie evened, by color cleavage due to the image on the printing plate before the next inking, ie revolution of the inking rollers, a partial transfer of the already printed image section to another of the image part to be printed on the printing substrate.
DarĆ¼ber hinaus ist durch eine radialhubfƤhige Lagerung zumindest der Filmwalze und/oder der Farbstromtrennwalze und/oder der Farbauftragswalzen des Farbwerks eine Verbesserung der QualitƤt des in Verbindung mit diesem Farbwerk erzeugten Druckerzeugnisses mƶglich, weil die von der jeweiligen Walze ausgeĆ¼bte Anpresskraft einstellar und je nach Bedarf nachfĆ¼hrbar ist, wobei mit dieser Einstellung der Transport an Druckfarbe steuerbar und damit optimierbar ist.In addition, an improvement in the quality of the printed product produced in connection with this inking unit is possible by a radial-lift bearing at least the film roller and / or the ink flow separation roller and / or the inking rollers of the inking, because the force exerted by the respective roller contact pressure adjustable and nachfĆ¼hrbar as needed is, with this setting the transport of ink controllable and thus optimized.
Ein AusfĆ¼hrungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird im Folgenden nƤher beschrieben.An embodiment of the invention is illustrated in the drawings and will be described in more detail below.
Es zeigen:
- Fig. 1
- einen Teil eines Druckwerks mit einem Farbwerk und einem Feuchtwerk;
- Fig. 2
- den in der
Fig. 1 dargestellten Teil des Druckwerks mit einer Lagerung der Druckwerkszylinder und mit jeweils einer Verstelleinrichtung an diversen Walzen, wobei die WalzenzĆ¼ge jeweils geschlossen sind; - Fig. 3
- den in der
Fig. 1 dargestellten Teil des Druckwerks mit einer Lagerung der Druckwerkszylinder und mit jeweils einer Verstelleinrichtung an diversen Walzen, wobei die WalzenzĆ¼ge jeweils durch einen Spalt unterbrochen sind; - Fig. 4
- eine Schnittdarstellung einer Lagereinheit eines Druckwerkszylinders;
- Fig. 5
- einen Druckturm einer Druckmaschine mit mehreren von den in den
Fig. 1 bis 3 dargestellten Anordnungen in einer ersten Betriebsstellung; - Fig. 6
- den in der
Fig. 5 dargestellten Druckturm in einer zweiten Betriebsstellung; - Fig. 7
- den in der
Fig. 5 dargestellten Druckturm mit Druckwerken jeweils ohne ein Feuchtwerk zur AusfĆ¼hrung eines Trockenoffsetverfahrens; - Fig. 8
- den in der
Fig. 5 dargestellten Druckturm mit jeweils einem an den jeweiligen Formzylindern angestellten Druckformmagazin.
- Fig. 1
- a part of a printing unit with an inking unit and a dampening unit;
- Fig. 2
- in the
Fig. 1 shown part of the printing unit with a storage of the printing cylinder and each with an adjustment to various rollers, the compactors are each closed; - Fig. 3
- in the
Fig. 1 shown part of the printing unit with a storage of the printing cylinder and each with an adjustment to various rollers, the rollers are each interrupted by a gap; - Fig. 4
- a sectional view of a bearing unit of a printing cylinder;
- Fig. 5
- a printing tower of a printing press with several of the in the
Fig. 1 to 3 shown arrangements in a first operating position; - Fig. 6
- in the
Fig. 5 illustrated printing tower in a second operating position; - Fig. 7
- in the
Fig. 5 illustrated printing tower with printing units each without a dampening unit for performing a dry offset process; - Fig. 8
- in the
Fig. 5 illustrated printing tower, each with a hired at the respective cylinders form printing forme magazine.
In der
Das Druckwerk weist als Druckwerkszylinder 01; 02 zumindest einen Ćbertragungszylinder 01 und einen mit diesem Ćbertragungszylinder 01 zusammenwirkenden Formzylinder 02 auf. Der Ćbertragungszylinder 01 erzeugt mit jeder seiner Umdrehungen auf einem nicht dargestellten Bedruckstoff, vorzugsweise auf einer Materialbahn, insbesondere auf einer Papierbahn, mindestens ein Druckbild. In dem in der
Das Farbwerk weist mehrere, vorzugsweise mindestens drei Farbauftragswalzen 03; 04; 06 auf, die in einem laufenden Produktionsprozess der Rotationsdruckmaschine an den Formzylinder 02 angestellt sind. Zwischen einem Druckfarbe aus einem Farbreservoir 07 aufnehmenden Farbduktor 08 und den Druckfarbe auf den Formzylinder 02 auftragenden Farbauftragswalzen 03; 04; 06 sind mehrere Walzen 09; 11; 12; 13 angeordnet. Die dem Farbduktor 08 in Transportrichtung der Druckfarbe nƤchstfolgende Walze 09 ist als eine Filmwalze 09 ausgebildet. Sodann ist in Transportrichtung der Druckfarbe nach der Filmwalze 09 eine als eine Farbstromtrennwalze 11 ausgebildete Walze 11 vorgesehen, welche einen vom Farbduktor 08 kommenden Farbstrom A in einen Hauptstrom B und in einen Nebenstrom C aufteilt. In der
Als Hauptstrom B wird derjenige Teil des vom Farbduktor 08 kommenden Farbstroms A bezeichnet, der in Drehrichtung der Farbstromtrennwalze 11 von dieser Farbstromtrennwalze 11 abgenommen und als erster Ć¼ber die in diesem Hauptstrom B angeordnete Reibwalze 12 in Richtung des Formzylinders 02 weitergeleitet wird. Derjenige Teil des vom Farbduktor 08 kommenden Farbstroms A, der in Drehrichtung der Farbstromtrennwalze 11 dem Hauptstrom B nachgeordnet von dieser Farbstromtrennwalze 11 abgenommen und in Richtung des Formzylinders 02 weitergeleitet wird, wird als Nebenstrom C der aus dem Farbreservoir 07 entnommenen Druckfarbe bezeichnet. Der Nebenstrom C kann wiederum in weitere Teilstrƶme D; E aufgeteilt sein, wenn an der im Nebenstrom C angeordneten Reibwalze 13 mehrere, insbesondere zwei der Farbauftragswalzen 03; 04; 06 angestellt sind. Da der Hauptstrom B des vom Farbduktor 08 kommenden Farbstroms A den Formzylinder 02 in dessen Drehrichtung zuerst, d. h. zumindest rƤumlich vor dem Nebenstrom C und seinen Teilstrƶmen D; E erreicht, wird ein solches Farbwerk als vorderlastig bezeichnet. Die im Nebenstrom C des vom Farbduktor 08 kommender Farbstroms A transportierte Druckfarbe wird z. B. auf den vom Hauptstrom B vorgefƤrbten Formzylinder 02 aufgetragen. Auch findet durch die zum Nebenstrom C und seinen Teilstrƶmen D; E gehƶrenden Farbauftragswalzen 04; 06 eine GlƤttung des im Hauptstrom B auf den Formzylinder 02 aufgetragenen Anteils der Druckfarbe statt. Ein solches Farbwerk erzeugt einen gleichmƤĆigen Farbauftrag auf dem einzufƤrbenden Formzylinder 02. Ein Farbwerk, dessen Hauptstrom B des vom Farbduktor 08 kommenden Farbstroms A den Formzylinder 02 in dessen Drehrichtung erst nach dem auf dem Formzylinder 02 aufgetragenen Nebenstrom C und seinen Teilstrƶmen D; E aufgetragen wird, wird als hinterlastig bezeichnet.The main stream B is that part of the color ink coming from the ink fountain roller 08 A, which is removed in the direction of rotation of the ink
Das Farbreservoir 07, aus dem der Farbduktor 08 die zum Formzylinder 02 zu transportierende Druckfarbe entnimmt, ist z. B. als ein Farbkasten 07 oder als eine Farbwanne 07 ausgebildet, wobei am Farbkasten 07 oder an der Farbwanne 07 in Axialrichtung des Farbduktors 08 aneinandergereiht mehrere, z. B. dreiĆig bis sechzig Farbmesser (nicht dargestellt) vorgesehen sind, welche jeweils mit einem nicht dargestellten Stellmittel vorzugsweise fernbetƤtigbar in ihrer jeweiligen Anstellung an den Farbduktor 08 einstellbar und tatsƤchlich auch angestellt sind, wodurch eine zonenweise Dosierung der vom Farbduktor 08 aufgenommenen Druckfarbe mƶglich ist. Die mit der Einstellung des jeweiligen Farbmessers vorgenommene Dosierung der Farbmenge ƤuĆert sich in einer zu dieser Einstellung proportionalen Schichtdicke der Druckfarbe in der betreffenden Zone auf der MantelflƤche des Farbduktors 08. Das Farbwerk ist demnach in der bevorzugten AusfĆ¼hrung als ein Zonenfarbwerk ausgebildet.The
Die Walzen 03; 04; 06; 08; 09; 11; 12; 13 des Farbwerks weisen in ihrer jeweiligen Axialrichtung eine LƤnge z. B. im Bereich von 500 mm bis 2.600 mm auf, insbesondere im Bereich von 1.400 mm bis 2.400 mm. Ihr AuĆendurchmesser liegt z. B. im Bereich zwischen 50 mm und 300 mm, vorzugsweise zwischen 80 mm und 250 mm.The
Die Farbstromtrennwalze 11 weist eine MantelflƤche vorzugsweise aus einem elastischen Werkstoff auf, z. B. aus einem Gummi. Der Elastomerwerkstoff der Farbstromtrennwalze 11 kann eine Schichtdicke z. B. im Bereich zwischen 1 mm und 20 mm aufweisen, vorzugsweise zwischen 5 mm und 15 mm. Die MantelflƤche der Farbstromtrennwalze 11 ist vorzugsweise mit einer HƤrte im Bereich zwischen 40 und 80 Shore A ausgebildet, insbesondere im Bereich zwischen 50 und 60 Shore A, wobei dieses MaĆ fĆ¼r die HƤrte nach DIN 53505 definiert ist. Je hƶher der Wert dieser HƤrteangabe ist, desto grƶĆer ist die HƤrte des Werkstoffs, der in diesem Fall fĆ¼r die MantelflƤche der Farbstromtrennwalze 11 verwendet wird.The ink
Die Filmwalze 09 weist als Besonderheit ihrer MantelflƤche eine MantelflƤche mit einer stochastischen Struktur auf, d. h. eine MantelflƤche mit einer unregelmƤĆigen Verteilung von diese OberflƤche strukturierenden Elementen, welche i. d. R. eine ungleichmƤĆige Form und auch keine bestimmte Vorzugsrichtung aufweisen. Die MantelflƤche der Filmwalze 09 besteht vorzugsweise aus einem Kunststoff, vorzugsweise aus einem Polyacrylat oder Polyamid, insbesondere aus Rilsan, oder in einer alternativen AusfĆ¼hrung auch aus Kupfer. Die MantelflƤche der Filmwalze 09 ist vergleichsweise hart ausgebildet und weist eine HƤrte von mindestens 60 Shore D, vorzugsweise Ć¼ber 70 Shore D, insbesondere im Bereich von 80 bis 90 Shore D auf, wobei auch dieses MaĆ fĆ¼r die HƤrte jeweils nach DIN 53505 definiert ist. Die stochastische Struktur wird in der bevorzugten AusfĆ¼hrung der Filmwalze 09 in deren ursprĆ¼nglich glatt und homogen ausgebildete MantelflƤche durch Kugelstrahlen eingebracht, was eine besonders einfache und daher kostengĆ¼nstige Herstellung der fĆ¼r den Transport von Druckfarbe vorteilhaften MantelflƤche dieser Filmwalze 09 darstellt. Es gilt zu beachten, dass zwischen den HƤrteprĆ¼fverfahren nach Shore A und Shore D keine lineare Korrelation besteht. Einem Anhang der DIN 53505 ist rein informatorisch entnehmbar, dass eine HƤrte von 80 Shore A ca. 30 Shore D entspricht. Eine HƤrteangabe von mindestens 60 Shore D, vorzugsweise Ć¼ber 70 Shore D, insbesondere von 80 bis 90 Shore D bezeichnet daher eine vergleichsweise sehr harte OberflƤche.The
Auch die MantelflƤche der Reibwalzen 12; 13 kann jeweils aus Kunststoff, vorzugsweise aus einem Polyamid, insbesondere aus Rilsan, ausgebildet sein. Die MantelflƤche der Reibwalzen 12; 13 ist jeweils glatt und ohne eine stochastische Struktur ausgebildet. Die Farbauftragswalzen 03; 04; 06 weisen jeweils vorzugsweise eine MantelflƤche aus einem Elastomerwerkstoff auf, vorzugsweise aus einem Gummi, wobei die nach DIN 53505 definierte HƤrte dieser MantelflƤchen jeweils vorzugsweise im Bereich zwischen 35 und 60 Shore A liegt. Die MantelflƤche des vorzugsweise in Druckfarbe eingetauchten Farbduktors 08 kann ein Stahl oder eine auf einem den Kern des Farbduktors 08 bildenden Material aufgetragene Keramikschicht sein.Also, the lateral surface of the
Die stochastische Struktur der MantelflƤche der Filmwalze 09 ist vorzugsweise durch in diese MantelflƤche eingelassene HohlrƤume und Vertiefungen ausgebildet, welche jeweils Strukturelemente bilden, wobei die HohlrƤume und Vertiefungen in Radialrichtung der Filmwalze 09 eine Tiefe im Bereich von z. B. 50 Āµm und 400 Āµm betragen kƶnnen, wobei diese Tiefe hinsichtlich der auf der MantelflƤche der Filmwalze 09 verteilten Strukturelemente uneinheitlich ausgebildet ist. Die die Filmwalze 09 als Rotationskƶrper tatsƤchlich begrenzende zylindrische OberflƤche weist eine Rauheit mit einer absoluten Rautiefe Rt z. B. im Bereich von 100 Āµm bis 120 Āµm und mit einer gemittelten Rautiefe Rz z. B. im Bereich von 60 Āµm bis 80 Āµm auf, wobei diese Werte z. B. auch mit einem Perthometer, d. h. einem TastschnittgerƤt, vorzugsweise gemĆ¤Ć einschlƤgigen Normen, z. B. DIN EN ISO 4287, ermittelbar sind. Ein nach DIN 4776 aus einer Abbott-Kurve ermittelter kleinster Materialanteil Mr1 (entsprechend einem Traganteil der Spitzen) der MantelflƤche der Filmwalze 09 liegt z. B. im Bereich zwischen 7 % und 13 %, vorzugsweise zwischen 9 % und 11 %. Ein nach DIN 4776 aus derselben Abbott-Kurve ermittelter grƶĆter Materialanteil Mr2 (entsprechend einem Traganteil der Riefen) der MantelflƤche der Filmwalze 09 liegt z. B. im Bereich zwischen 80 % und 95 %, vorzugsweise zwischen 85 % und 90 %.The stochastic structure of the lateral surface of the
Jeder der an der MantelflƤche der Filmwalze 09 offenen HohlrƤume und/oder Vertiefungen bildet hinsichtlich der zylinderfƶrmigen BezugsflƤche, d. h. mit Bezug auf die geschlossen und glattwandig gedachte zylindrische OberflƤche, eine LeerflƤche aus, wobei die LeerflƤche dem Ćffnungsquerschnitt des jeweiligen Hohlraums oder der jeweiligen Vertiefung in der Ebene der BezugsflƤche entspricht. Die Summe der LeerflƤchen aller an der MantelflƤche der Filmwalze 09 vorhandenen HohlrƤume und/oder Vertiefungen bildet relativ zu der geschlossen gedachten zylindrischen OberflƤche einen LeerflƤchenanteil, wobei der LeerflƤchenanteil maximal 35 % von dieser zylindrischen OberflƤche betrƤgt und vorzugsweise zwischen 20 % und 30 % liegt. In AbhƤngigkeit von der GrƶĆe ihrer jeweiligen LeerflƤche und ihrer jeweiligen Tiefe bilden die HohlrƤume und/oder Vertiefungen der Filmwalze 09 ein Leervolumen aus, wobei das Leervolumen aller pro m2 gedachter zylindrischer OberflƤche vorhandenen HohlrƤume und/oder Vertiefungen mindestens 50.000 mm3, vorzugsweise mindestens 100.000 mm3, insbesondere mindestens 150.000 mm3 betrƤgt.Each of the open on the lateral surface of the
Die an der MantelflƤche der Filmwalze 09 angeordneten HohlrƤume und/oder Vertiefungen strukturieren somit mit ihrem jeweiligen LeerflƤchenanteil sowie mit ihrem jeweiligen Leervolumen die MantelflƤche der Filmwalze 09 und bilden dort ein Relief aus, wobei dieses Relief z. B. auf das rheologische Verhalten der zu transportierenden Druckfarbe abstimmbar ist, insbesondere auf die ViskositƤt und/oder die ZĆ¼gigkeit der zu transportierenden Druckfarbe, sodass die VorgƤnge des BefĆ¼llens und Entleerens der HohlrƤume und/oder Vertiefungen mit der zu transportierenden Druckfarbe sowie ein Verhaften der zu transportierenden Druckfarbe wƤhrend deren jeweiligen Transports von dem Farbduktor 08 zur Farbstromtrennwalze 11 in AbhƤngigkeit von einer fĆ¼r diese Filmwalze 09 an ihrer MantelflƤche vorgesehenen Drehgeschwindigkeit optimiert sind, wobei eine die Drehgeschwindigkeit der Filmwalze 09 bedingende Transportgeschwindigkeit des in dieser Rotationsdruckmaschine bedruckten Bedruckstoffes z. B. im Bereich bis zu 20 m/s liegen kann, wobei eine derartige Rotationsdruckmaschine insbesondere im Zeitungsdruck eingesetzt ist. Die vorteilhafte Wirkung der in der Filmwalze 09 eingebrachten HohlrƤume und/oder Vertiefungen kommt insbesondere bei einer hƶheren Transportgeschwindigkeit des in dieser Rotationsdruckmaschine bedruckten Bedruckstoffes zur Geltung, z. B. bei einer Transportgeschwindigkeit von mindestens 10 m/s, insbesondere im Bereich zwischen 10 m/s und 15 m/s. Die Produktionsgeschwindigkeit der Druckmaschine kann auch durch die Drehzahl ihrer Druckwerkszylinder 01; 02 angegeben sein, wobei diese Drehzahl der z. B. als Doppelumfangszylinder ausgebildeten rotierenden Druckwerkszylinder 01; 02 z. B. mehr als 40.000 Umdrehungen pro Stunde betrƤgt. Ein Doppelumfangszylinder weist entlang seines Umfangs zwei vorzugsweise jeweils gleich lange AbschnittslƤngen auf, wobei jede AbschnittslƤnge z. B. einer Hƶhe einer zu druckenden Zeitungsseite entspricht. Beide zusammenwirkenden Druckwerkszylinder 01; 02 weisen vorzugsweise einen betragsmƤĆig gleichen Umfang auf.The arranged on the lateral surface of the
Um die Farbschichtdicke auf der Farbstromtrennwalze 11 zu egalisieren und vom Farbduktor 08 Ć¼berschĆ¼ssig aufgetragene Druckfarbe von der MantelflƤche dieser Farbstromtrennwalze 11 zu entfernen, kann an der Farbstromtrennwalze 11 eine weitere als eine Rakelwalze 14 ausgebildete Walze 14 angestellt oder zumindest anstellbar sein, wobei an der Rakelwalze 14 eine Rakel 16 angestellt ist. Die Rakelwalze 14 ist an der Farbstromtrennwalze 11 in deren Drehrichtung nach der Abzweigung des Nebenstromes C angestellt. Die von der Rakelwalze 14 mit der Rakel 16 abgerakelte Ć¼berschĆ¼ssige Druckfarbe wird z. B. in das Farbreservoir 07 zurĆ¼ckgefĆ¼hrt, was in der
Ćberdies kann eine BrĆ¼ckenwalze 17 vorgesehen sein, wobei die BrĆ¼ckenwalze 17 gleichzeitig an eine der Farbauftragswalzen 03 und an eine z. B. als eine Feuchtauftragswalze 18 ausgebildete Walze 18 eines an den Formzylinder 02 anstellbaren Feuchtwerks angestellt oder zumindest anstellbar ist. Die BrĆ¼ckenwalze 17 ist vorzugsweise an eine im Hauptstrom B angeordnete Farbauftragswalze 03 anstellbar. Sie glƤttet nochmals den zum Formzylinder 02 fĆ¼hrenden Hauptstrom B des vom Farbduktor 08 kommenden Farbstroms A. Das Feuchtwerk ist vorzugsweise als ein ein Feuchtmittel kontaktlos aufbringendes Feuchtwerk, z. B. als ein SprĆ¼hfeuchtwerk ausgebildet, sodass es einen SprĆ¼hbalken 19 aufweist, wobei vorzugsweise mehrere in dem SprĆ¼hbalken 19 angeordnete SprĆ¼hdĆ¼sen das Feuchtmittel auf eine z. B. als eine Feuchtreiberwalze 21 ausgebildete Walze 21 des Feuchtwerks aufsprĆ¼hen. Das auf die Feuchtreiberwalze 21 aufgesprĆ¼hte Feuchtmittel wird von einer weiteren z. B. als eine GlƤttwalze 22 ausgebildete Walze 22 des Feuchtwerks auf dessen Feuchtauftragswalze 18 und von dort auf den Formzylinder 02 Ć¼bertragen. Mit der BrĆ¼ckenwalze 17 ist der zum Formzylinder 02 fĆ¼hrende Hauptstrom B des vom Farbduktor 08 kommenden Farbstroms A bis hin zur Feuchtauftragswalze 18 des Feuchtwerks verlƤngerbar, was den Vorteil hat, dass die Ć¼ber den Hauptstrom B transportierte Druckfarbe bereits im Feuchtwerk mit dem von diesem Feuchtwerk bereitgestellten Feuchtmittel in Kontakt kommt und gemeinsam mit dem Feuchtmittel auf Formzylinder 02 aufgetragen wird. In diesem Betriebsfall fĆ¼hrt von der im Hauptstrom B angeordneten Farbauftragswalze 03 nur ein Teilstrom F von der im Hauptstrom B transportierten Druckfarbe direkt zum Formzylinder 02.Moreover, a
Die MantelflƤche der Feuchtauftragswalze 18 ist vorzugsweise aus einem Elastomerwerkstoff ausgebildet, vorzugsweise aus einem Gummi, wobei die nach DIN 53505 definierte HƤrte dieser MantelflƤche vorzugsweise im Bereich zwischen 25 und 30 Shore A liegt und damit vergleichsweise weich ist. Unter der Voraussetzung, dass die MantelflƤche der GlƤttwalze 22 aus Chrom ausgebildet ist, ist die MantelflƤche der Feuchtreiberwalze 21 aus einem vergleichsweise weichen Elastomerwerkstoff ausgebildet, vorzugsweise aus einem Gummi, wobei die nach DIN 53505 definierte HƤrte dieser MantelflƤche vorzugsweise im Bereich zwischen 25 und 30 Shore A liegt. Wenn hingegen die MantelflƤche der GlƤttwalze 22 gleichfalls aus einem Elastomerwerkstoff ausgebildet ist, dann sind die MantelflƤche der GlƤttwalze 22 und die der Feuchtreiberwalze 21 vorzugsweise aus demselben Elastomerwerkstoff, z. B. aus einem Gummi, ausgebildet, wobei die nach DIN 53505 definierte HƤrte dieser MantelflƤchen vorzugsweise im Bereich zwischen 40 und 60 Shore A liegt. Damit ist de MantelflƤche der Feuchtreiberwalze 21 in der zweiten Alternative hƤrter ausgebildet als in der ersten Alternative. Ob die erste oder die zweite Alternative zum Einsatz kommt, ist davon abhƤngig, wie die Walzen 18; 21; 22 des Feuchtwerks angetrieben sind. In dem Fall, dass die GlƤttwalze 22 einen eigenstƤndigen Antrieb 57, z. B. einen Elektromotor 57, aufweist, der in der
In der
Die oberste Farbauftragswalze, 06 des Farbwerks ist derart angeordnet, dass sich in ihrem an den Formzylinder 02 angestellten Betriebszustand eine an den Umfang dieser Farbauftragswalze 06 angelegte horizontale Tangente T06 von einer an den Umfang des Formzylinders 02 angelegten horizontalen Tangente T02 in einem vertikalen Abstand a06 von mindestens 50 mm befindet. Dieser vertikale Abstand a06 bildet sozusagen einen Versatz zwischen der obersten Farbauftragswalze 06 und dem Formzylinder 02 aus. Durch diese Anordnung ergibt sich von einer Bedienseite des Druckwerks aus eine ausreichende ZugƤnglichkeit zum Formzylinder 02, zumal auch alle Ć¼brigen zum Farbwerk gehƶrenden Walzen 03; 04; 08; 09; 11; 12; 13; 14 deutlich unterhalb der an den Umfang der obersten Farbauftragswalze 06 angelegten horizontalen Tangente T06 angeordnet sind. Die Walzen 18; 21; 22 des Feuchtwerks sind im Wesentlichen unterhalb des Formzylinders 02 angeordnet und schrƤnken ebenfalls die ZugƤnglichkeit zum Formzylinder 02 nicht ein. Die ZugƤnglichkeit zum Formzylinder 02 muss z. B. deshalb gegeben sein, um an der MantelflƤche des Formzylinders 02 in mƶglichst kurzer Zeit eine oder mehrere Druckformen wechseln zu kƶnnen. Ein Wechsel von Druckformen kann am Formzylinder 02 manuell durch eine die Druckmaschine bedienende Bedienperson oder automatisch mit Hilfe eines an den Formzylinder 02 vorzugsweise tangential angestellten Druckformmagazins 58 (
Trotz der vergleichsweise geringen Anzahl von Farbspaltstellen in dem Druckfarbe zum Druckwerkszylinder 02 transportierenden Walzenzug erzeugt das dargestellte Farbwerk auf dem Druckwerkszylinder 02 einen gleichmƤĆigen Farbauftrag, denn es sind dort mehr Walzen vorgesehen, wo sie zum GlƤtten des Farbauftrags besonders benƶtigt werden, nƤmlich in unmittelbaren Kontakt mit dem Druckwerkszylinder 02, wo vorzugsweise drei Farbauftragswalzen 03; 04; 06 vorgesehen sind. Insbesondere durch die besondere, nƤmlich stochastische Struktur der MantelflƤche der Filmwalze 09 wird erreicht, dass das vorgeschlagene Farbwerk kaum zum Schablonieren neigt. Im Ergebnis ist mit diesem Farbwerk auch im Zeitungsdruck ein Druckerzeugnis mit einer hohen DruckqualitƤt erzielbar, was den immer weiter steigenden QualitƤtsansprĆ¼chen im Zeitungsdruck Rechnung trƤgt. Selbst in einer schnelllaufenden Druckmaschine mit einer Transportgeschwindigkeit des Bedruckstoffes von mehr als 10 m/s, vorzugsweise im Bereich zwischen 10 m/s und 15 m/s, wie sie Ć¼blicherweise im Zeitungsdruck eingesetzt wird, tritt aufgrund des kurzen Walzenzuges und der verwendeten Filmwalze 09 der unerwĆ¼nschte Effekt des Farbnebelns kaum auf. Die Verwendung des in der
Alle Walzen 03; 04; 06; 08; 09; 11; 12; 13; 14 des Farbwerks, die Walzen 18; 21; 22 des Feuchtwerks, die BrĆ¼ckenwalze 17 sowie die Druckwerkszylinder 01; 02 sind jeweils in voneinander beabstandet angeordneten, sich gegenĆ¼ber stehenden Seitengestellen 47; 48 der Druckmaschine (
Mit der Einstellung der Anpresskraft, die eine der Walzen 03; 04; 06; 09; 11; 18; 21 auf ihren benachbarten Rotationskƶrper ausĆ¼bt, wird auch eine Breite eines sich im BerĆ¼hrungskontakt zwischen dieser Walze 03; 04; 06; 09; 11; 18; 21 und dem benachbarten Rotationskƶrper ausbildenden Walzenstreifens eingestellt, wobei sich der Walzenstreifen als eine Abplattung an der MantelflƤche der Walze 03; 04; 06; 09; 11; 18; 21, an der MantelflƤche des mit der Walze 03; 04; 06; 09; 11; 18; 21 zusammenwirkenden zylindrischen Rotationskƶrpers oder an der MantelflƤche von beiden darstellt. Die Breite des Walzenstreifens ist die sich durch die Abplattung ausbildende Sehne am ansonsten kreisfƶrmigen Querschnitt der Walze 03; 04; 06; 09; 11; 18; 21 oder des mit ihr zusammenwirkenden Rotationskƶrpers. Die Abplattung ist aufgrund einer elastisch verformbaren MantelflƤche von der Walze 03; 04; 06; 09; 11; 18; 21 oder des mit ihr zusammenwirkenden Rotationskƶrpers mƶglich. Ein Walzenstreifen wird auch als nip-Stelle bezeichnet. In der die Aktoren 23 steuernden Steuereinheit kƶnnen Werte fĆ¼r deren jeweiliges Druckniveau gespeichert sein, auf welches die jeweiligen Aktoren 23 einzustellen sind, um fĆ¼r eine bestimmte Walze 03; 04; 06; 09; 11; 18; 21 durch die aus der jeweiligen Einstellung der Aktoren 23 resultierende Anpresskraft einen Walzenstreifen bestimmter Breite zu ihrem benachbarten Rotationskƶrper auszubilden.With the adjustment of the contact pressure, one of the
Die Druckwerkszylinder 01; 02, d. h. der Ćbertragungszylinder 01 und der Formzylinder 02, sind gemĆ¤Ć ihrer Darstellung in den
Die einen An-/Abstellmechanismus fĆ¼r den jeweiligen Druckwerkszylinder 01; 02 integrierende Lagereinheit 24 weist neben einem Lager 26, z. B. Radiallager 26, beispielsweise ein Zylinderrollenlager 26, zur rotatorischen Lagerung des jeweiligen Druckwerkszylinders 01; 02 Lagermittel 27; 28 fĆ¼r eine radiale Bewegung des jeweiligen Druckwerkszylinders 01; 02 - zum Druck-An- bzw. Druck-Abstellen - auf. Hierzu weist die Lagereinheit 24 nach ihrer Montage in oder an ein Gestell der Druckmaschine gestellfeste, trƤgerfeste Lagerelemente 27 als auch die gegen diese bewegbaren Lagerelemente 28 auf. Die trƤgerfesten und bewegbaren Lagerelemente 27; 28 sind als zusammenwirkende Linearelemente 27; 28 und gemeinsam mit entsprechenden GleitflƤchen oder dazwischenliegenden WƤlzelementen insgesamt als ein Linearlager ausgebildet. Die Linearelemente 27; 28 nehmen paarweise einen das Radiallager 26 aufnehmenden, z. B. als ein Schlitten 29 ausgebildeten Lagerblock 29 zwischen sich auf. Lagerblock 29 und die bewegbaren Lagerelemente 28 kƶnnen auch einteilig ausgefĆ¼hrt sein. Die trƤgerfesten Lagerelemente 27 sind an einem TrƤger 31 angeordnet, welcher insgesamt mit einem der Seitengestelle 47; 48 (
Vorzugsweise ist eine LƤnge des Linearlagers, insbesondere zumindest eine LƤnge des im montierten Zustand gestellfesten Lagermittels 27 des Linearlagers, in Richtung des Stellweges S betrachtet kleiner als ein Durchmesser des zugeordneten Druckwerkszylinders 01; 02. Der Lagerblock 29 weist vorzugsweise nur einen einzigen Bewegungsfreiheitsgrad in Richtung des Stellweges S auf.Preferably, a length of the linear bearing, in particular at least a length of the frame-mounted in the mounted state bearing means 27 of the linear bearing, in the direction of the travel S considered smaller than a diameter of the associated
Die Lagereinheit 24, die vorzugsweise als eine als Ganzes montierbare Baueinheit ausgebildet ist, bildet z. B. ein ggf. zum Teil offenes GehƤuse aus z. B. dem TrƤger 31 und/oder z. B. einem Rahmen (in
Ein Druck-An-Stellen erfolgt durch Bewegen des Lagerblocks 29 in Richtung Druckstelle mittels einer durch wenigstens einen Aktor 32 auf den Lagerblock 29 aufgebrachten Kraft F, insbesondere durch mindestens einen kraftgesteuerten Aktor 32, mittels walchem zur Anstellung eine definierte bzw. definierbare Kraft F in Druck-An-Richtung auf den Lagerblock 29 bringbar ist (
Besonders vorteilhaft ist eine AusfĆ¼hrung, in der der Lagerblock 29 - auch wƤhrend des Betriebes der Druckmaschine - zumindest in eine von der Druckstelle wegweisenden Richtung gegen eine Kraft, z. B. Federkraft, insbesondere eine definierbare Kraft, bewegbar gelagert ist. Damit wird - im Gegensatz zur reinen Wegbegrenzung - einerseits eine maximale Linienkraft beim Zusammenwirken der Druckwerkszylinder 01; 02 definiert, und andererseits ein Nachgeben ermƶglicht, beispielsweise bei einem Bahnriss mit anschlieĆendem Wickler an einem der Druckwerkszylinder 01; 02.Particularly advantageous is an embodiment in which the bearing block 29 - even during operation of the printing press - at least in a direction away from the pressure point against a force, for. B. spring force, in particular a definable force, is movably mounted. This is - in contrast to the pure travel limit - on the one hand, a maximum line force in the interaction of the
Die Lagereinheit 24 weist auf ihrer zu einer Druckstelle zugewandten Seite - zumindest wƤhrend des Einstellvorgangs - einen ortsverƤnderbaren Anschlag 33 auf, welcher den Stellweg S zur Druckstelle hin begrenzt. Der Anschlag 33 ist in der Weise ortsverƤnderbar, dass eine als Anschlag wirksame AnschlagflƤche 34, deren Bezugszeichen in der
Weiter ist in vorteilhafter AusfĆ¼hrung ein in
Im Idealfall ist die aufgebrachte Kraft F, die RĆ¼ckstellkraft FR und die Position des Anschlages 33 derart gewƤhlt, dass zwischen Anschlag 33 und der AnschlagflƤche des Lagerblockes 29 in Anstelllage keine wesentliche Kraft ĪF Ć¼bertragen wird, dass beispielsweise gilt | ĪF|< 0,1*(F- FR), insbesondere | ĪF|< 0,05*(F- FR), idealerweise |ĪF| ā 0. In diesem Fall wird die Anstellkraft zwischen den Druckwerkszylindern 01; 02 wesentlich Ć¼ber die durch den Aktor 32 anliegende Kraft F bestimmt. Die fĆ¼r die FarbĆ¼bertragung und damit die DruckqualitƤt u. a. entscheidende Linienkraft FL in der jeweiligen nip-Stelle ist daher nicht primƤr durch einen Stellweg S, sondern bei quasifreiem Anschlag 33 durch die Kraft F und das resultierende Gleichgewicht definiert. GrundsƤtzlich wƤre nach Auffinden der Grundeinstellung mit den hierzu passenden KrƤften F ein Entfernen des Anschlages 33 bzw. einer entsprechenden, lediglich wƤhrend des Grundeinstellens wirksamen Fixierung denkbar.Ideally, the applied force F, the restoring force F R and the position of the
Der Aktor 32 kann grundsƤtzlich als beliebiger, eine definierte Kraft F aufbringender Aktor 32 ausgefĆ¼hrt sein. Vorteilhaft ist der Aktor 32 als durch ein Druckmittel betƤtigbares Stellmittel 32, insbesondere als durch ein Fluid bewegbarer Kolben 32 ausgefĆ¼hrt. Vorteilhaft im Hinblick auf mƶgliches Verkanten ist die Anordnung mehrerer, hier zwei, derartiger Aktoren 32. Als Fluid kommt vorzugsweise wegen deren InkompressibilitƤt eine FlĆ¼ssigkeit, z. B. ein Ćl oder Wasser, zum Einsatz.The
Zu BetƤtigung der hier als Hydraulikkolben 32 ausgefĆ¼hrten Aktoren 32 ist in der Lagereinheit 24 ein steuerbares Ventil 38 vorgesehen. Dieses ist beispielsweise elektronisch ansteuerbar ausgefĆ¼hrt und stellt einen Hydraulikkolben in einer ersten Stellung drucklos oder zumindest auf ein geringeres Druckniveau, wƤhrend in einer anderen Stellung ein die Kraft F bedingender Druck P anliegt. ZusƤtzlich ist hier zur Sicherheit eine nicht bezeichnete Leckageleitung vorgesehen.For actuation of the
Um zu groĆe An-/Abstellwege zu vermeiden und dennoch Bahnwickler abzusichern, kann auf der druckstellenfemen Seite des Lagerblocks 29 eine Wegbegrenzung durch einen ortsverƤnderlichen, kraftbegrenzten Anschlag 39 als Ćberlastsicherung 39 z. B. in Verbindung mit einem Federelement vorgesehen sein, welche in der betriebsmƤĆigen Druck-Ab-Stellung, d. h. die Kolben 32 sind entlastet und/oder eingefahren, zwar als Anschlag 39 fĆ¼r den Lagerblock 29 dienen, im Fall eines Bahnwicklers oder anderer von der Druckstelle herrĆ¼hrender Ć¼berhƶhter KrƤfte jedoch nachgibt und einen grƶĆeren Weg frei gibt. Eine Federkraft dieser Ćberlastsicherung 39 ist daher grƶĆer gewƤhlt, als die Summe der KrƤfte aus den Federelementen 37. Beim betriebsmƤĆigen An-/Abstellen ist daher ein lediglich sehr kurzer Stellweg, z. B. lediglich 1 mm bis 3 mm, vorsehbar.In order to avoid too large An- / Abstellwege and still hedge Bahnwickler, can on the druckstellenfemen side of the
Der Anschlag 33 ist in der dargestellten AusfĆ¼hrung (
Der hier als Keil 33 ausgefĆ¼hrte Anschlag 33 ist durch einen Aktor 36 bewegbar, beispielsweise durch ein druckmittelbetƤtigbares Stellmittel 36, z. B. einen mit einem Druckmittel betƤtigbaren Kolben 36 in einem Arbeitszylinder mit (doppeltwirkenden) Kolben Ć¼ber ein z. B. als eine Kolbenstange 42 ausgefĆ¼hrtes Ćbertragungsglied 42 oder durch einen Elektromotor Ć¼ber ein als Gewindespindel ausgefĆ¼hrtes Ćbertragungsglied 42. Dieser Aktor 36 kann entweder in beide Richtungen wirksam oder aber, wie hier dargestellt, als Einwegeaktor ausgefĆ¼hrt sein, welcher bei Aktivierung gegen eine RĆ¼ckstellfeder 43 arbeitet. Die Kraft der RĆ¼ckstellfeder 43 ist aus o. g. GrĆ¼nden (weitgehend kraftfreier Anschlag 33) so schwach gewƤhlt, dass der Keil 33 lediglich entgegen der Schwerkraft oder SchwingungskrƤften in seiner korrekten Lage gehalten wird.The executed here as a
GrundsƤtzlich kann der Anschlag 33 auch auf andere Art (z. B. als zur Stellrichtung stellbarer und fixierbarer StƶĆel etc.) in der Weise ausgefĆ¼hrt sein, dass er eine in Richtung des Stellweges S variierbare, und - zumindest wƤhrend des Einstellvorgangs - fixierbare AnschlagflƤche 34 fĆ¼r die Bewegung des Lagerblockes 29 in Richtung Druckstelle bildet. In einer nicht dargestellten AusfĆ¼hrung erfolgt ein Stellen des Anschlages 33 beispielsweise direkt parallel zur Richtung des Stellweges S durch ein Antriebsmittel, beispielsweise einen mit Druckmittel betƤtigbaren Zylinder mit (doppelt wirkendem) Kolben oder einen Elektromotor.In principle, the
Die
Der Druckturm 44 ist auf einem Fundament 46 angeordnet. Es kann vorgesehen sein, dass zumindest eines der Paare der Seitengestelle 47; 48 auf dem Fundament 46 linear bewegbar ist.
Die
Die
- 0101
- Druckwerkszylinder, ĆbertragungszylinderPrinting cylinder, transfer cylinder
- 0202
- Druckwerkszylinder, FormzylinderPrinting cylinder, form cylinder
- 0303
- FarbauftragswalzeInking roller
- 0404
- FarbauftragswalzeInking roller
- 0505
- --
- 0606
- FarbauftragswalzeInking roller
- 0707
- Farbreservoir, Farbkasten, FarbwannePaint reservoir, ink fountain, paint tray
- 0808
- Farbduktorink fountain roller
- 0909
- Walze, FilmwalzeRoller, film roller
- 1010
- --
- 1111
- Walze, FarbstromtrennwalzeRoller, ink separation roller
- 1212
- Walze, ReibwalzeRoller, rubbing roller
- 1313
- Walze, ReibwalzeRoller, rubbing roller
- 1414
- Walze, RakelwalzeRoller, squeegee roller
- 1515
- --
- 1616
- Rakeldoctor
- 1717
- BrĆ¼ckenwalzebridge roller
- 1818
- Walze, FeuchtauftragswalzeRoller, dampener
- 1919
- SprĆ¼hbalkenspray
- 2020
- --
- 2121
- Walze, FeuchtreiberwalzeRoller, dampening roller
- 2222
- Walze, GlƤttwalzeRoller, smoothing roller
- 2323
- Aktoractuator
- 2424
- Lagereinheitstorage unit
- 2525
- --
- 2626
- Lager, Radiallager, ZylinderrollenlagerBearings, radial bearings, cylindrical roller bearings
- 2727
- Lagermittel, LagerelementBearing means, bearing element
- 2828
- Lagermittel, LagerelementBearing means, bearing element
- 2929
- Lagerblock, SchlittenStorage block, sled
- 3030
- --
- 3131
- TrƤgercarrier
- 3232
- Aktor, Stellmittel, Kolben, HydraulikkolbenActuator, adjusting means, pistons, hydraulic pistons
- 3333
- Anschlag, KeilStop, wedge
- 3434
- AnschlagflƤchestop surface
- 3535
- --
- 3636
- Aktor, Stellmittel, KolbenActuator, adjusting means, piston
- 3737
- federnd wirkendes Element, Federelementresilient element, spring element
- 3838
- VentilValve
- 3939
- Anschlag, ĆberlastsicherungStop, overload protection
- 4040
- --
- 4141
- Anschlagattack
- 4242
- Ćbertragungsglied, KolbenstangeTransmission link, piston rod
- 4343
- RĆ¼ckstellfederReturn spring
- 4444
- Druckturmprinting tower
- 4545
- --
- 4646
- Fundamentfoundation
- 4747
- Seitengestellside frame
- 4848
- Seitengestellside frame
- 4949
- Podestpodium
- 5050
- --
- 5151
- Antrieb, ElektromotorDrive, electric motor
- 5252
- Antrieb, ElektromotorDrive, electric motor
- 5353
- Antrieb, ElektromotorDrive, electric motor
- 5454
- Antrieb, ElektromotorDrive, electric motor
- 5555
- --
- 5656
- Antrieb, ElektromotorDrive, electric motor
- 5757
- Antrieb, ElektromotorDrive, electric motor
- 5858
- DruckformmagazinPrinting forme magazine
- 5959
- Schachtshaft
- 6060
- --
- 6161
- Schachtshaft
- 6262
- Anschlagattack
- 6363
- AndrĆ¼ckelement, WƤlzelementPressure element, rolling element
- AA
- Farbstromcolor power
- BB
- Hauptstrommain power
- CC
- Nebenstromsidestream
- DD
- Teilstrompartial flow
- Ee
- Teilstrompartial flow
- FF
- Teilstrompartial flow
- SS
- StellwegTravel Range
- a06a06
- Abstanddistance
- a13a13
- Abstanddistance
- T02T02
- Tangentetangent
- T06T06
- Tangentetangent
Claims (21)
- Arrangement in a printing unit of a rotary printing press, at least having a forme cylinder (02), three inking rollers (03; 04; 06), two friction rollers (12; 13) and an ink separator roller (11), both friction rollers (12, 13) being thrown in each case directly onto the ink separator roller (11), one of the inking rollers (03) being thrown both onto one of the friction rollers (12) and onto the forme cylinder (02), the other two inking rollers (04; 06) being thrown both onto the other friction roller (13) and onto the forme cylinder (02), a printing ink being provided from an ink-duct roller (08) having an ink reservoir (07), characterized in that the forme cylinder (02) is occupied by a plurality of printing formes, in that only a single roller (09) is arranged between the ink-duct roller (08) and the ink separator roller (11), at least this roller (09) being arranged so as to be capable of a radial stroke, the radial stroke of this roller (09) being such that the respective axis of this roller (09) or at least one of the ends of this roller (09) is eccentrically displaceable relative to a bearing point which belongs to this roller (09) and is fixed to the frame.
- Arrangement according to Claim 1, characterized in that the uppermost inking roller (06) is arranged in such a way that a horizontal tangent (T06) to the circumference of this inking roller (06) is a vertical distance (a06) of at least 50 mm away from a horizontal tangent (T02) to the circumference of the forme cylinder (02).
- Arrangement according to Claim 2, characterized in that a printing forme magazine (58) is positioned tangentially to the forme cylinder (02), above the uppermost inking roller (06).
- Arrangement according to Claim 3, characterized in that the printing forme magazine (58) has at least one substantially horizontally aligned shaft (59; 61).
- Arrangement according to Claim 4, characterized in that the printing forme magazine (58) has at least one first shaft (59) for feeding at least one new printing forme to the forme cylinder (02).
- Arrangement according to Claim 4, characterized in that the printing forme magazine (58) has a second shaft (61) for receiving at least one printing forme removed from the forme cylinder (02).
- Arrangement according to Claims 5 and 6, characterized in that both shafts (59; 61) are aligned substantially horizontally and are arranged at a vertical distance one above the other.
- Arrangement according to Claim 1, characterized in that the forme cylinder (02) is in the form of a double-circumference cylinder (02), the forme cylinder (02) having two section lengths along its circumference, each section length corresponding to a height of a newspaper page to be printed.
- Arrangement according to Claim 1, characterized in that the ink separator roller (11) divides an ink stream (A) arriving from the ink-duct roller (08) into a mainstream (B) and into a secondary stream (C).
- Arrangement according to Claim 1, characterized in that this roller (09) arranged as a single roller between the ink-duct roller (08) and the ink separator roller (11) is in the form of a film roller (09).
- Arrangement according to Claim 10, characterized in that the film roller (09) has a lateral surface with a stochastic structure.
- Arrangement according to Claim 1, characterized in that the respective axis of rotation of all rollers (03; 04; 06; 08; 09; 11; 12; 13) transporting printing ink to the forme cylinder (02) is arranged in each case a vertical distance away below the horizontal tangent (T06) to the circumference of the uppermost inking roller (06).
- Arrangement according to Claim 1, characterized in that a dampening unit is coordinated with the forme cylinder (02).
- Arrangement according to Claim 1, characterized in that the ink separator roller (11) and/or the inking rollers (03; 04; 06) and/or at least the dampening roller (18) of the dampening unit, which dampening roller can be thrown onto the forme cylinder (02), are arranged in each case so as to be capable of a radial stroke, the radial stroke of these rollers (03; 04; 06; 11; 18) being such that the respective axis of these rollers (03; 04; 06; 11; 18) or at least one of the ends of these rollers (03; 04; 06; 11; 18) is eccentrically displaceable relative to a bearing point belonging to the respective roller (03; 04; 06; 11; 18) and fixed to the frame.
- Arrangement according to Claim 1, characterized in that one of the two friction rollers (12; 13) is driven by a drive (53; 54) which is independent in each case of a drive (51; 52) of the forme cylinder (02) or of a transfer cylinder (01) cooperating with this forme cylinder (02).
- Arrangement according to Claim 1, characterized in that a doctor blade roller (14) is thrown onto the ink separating roller (11), a doctor blade (16) being thrown onto the doctor blade roller (14).
- Arrangement according to Claim 16, characterized in that the doctor blade roller (14) thrown onto the ink separating roller (11) is arranged, in the direction of rotation of the ink separating roller (11), after the branching-off of the secondary stream (C).
- Arrangement according to Claim 1, characterized in that both ends of the forme cylinder (02) or of a transfer cylinder (01) cooperating with this forme cylinder (02) are mounted in each case in a bearing unit (24), the bearing unit (24) permitting the respective cylinder (01; 02) to execute a linear adjustment travel (S), this adjustment travel (S) being oriented substantially orthogonally to a print medium printed by the transfer cylinder (01).
- Arrangement according to Claim 1, characterized in that the ink knives which meter in a zone-by-zone manner printing ink received from the ink reservoir (07) are provided on the ink duct roller (08).
- Arrangement according to Claim 1, characterized in that the two friction rollers (12; 13) execute a traversing stroke in their respective axial direction, the traversing stroke of the two friction rollers (12; 13) being opposite in direction.
- Arrangement according to Claim 1, characterized in that it is arranged in a printing tower (44), a plurality of these arrangements being arranged vertically one on top of the other in this printing tower (44).
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08168444A EP2033785B1 (en) | 2006-05-23 | 2007-05-22 | Arrangement in a printing unit of a rotation printing press |
EP07729400A EP2019753B1 (en) | 2006-05-23 | 2007-05-22 | Assemblies in the printing unit of a rotary press |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006024029 | 2006-05-23 | ||
DE102006030057A DE102006030057B4 (en) | 2006-05-23 | 2006-06-29 | Inking unit of a rotary printing machine |
DE200610042590 DE102006042590B4 (en) | 2006-09-11 | 2006-09-11 | Rotary printing machine with at least one color flow separation roller having inking unit |
PCT/EP2007/053701 WO2007134919A1 (en) | 2006-05-23 | 2007-04-17 | Inking unit of a rotary press, comprising a film roller |
EP07729400A EP2019753B1 (en) | 2006-05-23 | 2007-05-22 | Assemblies in the printing unit of a rotary press |
PCT/EP2007/054961 WO2007135155A2 (en) | 2006-05-23 | 2007-05-22 | Assemblies in the printing unit of a rotary press |
Related Child Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08168444A Division-Into EP2033785B1 (en) | 2006-05-23 | 2007-05-22 | Arrangement in a printing unit of a rotation printing press |
EP08168444A Division EP2033785B1 (en) | 2006-05-23 | 2007-05-22 | Arrangement in a printing unit of a rotation printing press |
EP08168444.1 Division-Into | 2008-11-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2019753A2 EP2019753A2 (en) | 2009-02-04 |
EP2019753B1 true EP2019753B1 (en) | 2010-01-27 |
Family
ID=38480430
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07729400A Active EP2019753B1 (en) | 2006-05-23 | 2007-05-22 | Assemblies in the printing unit of a rotary press |
EP08168444A Active EP2033785B1 (en) | 2006-05-23 | 2007-05-22 | Arrangement in a printing unit of a rotation printing press |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08168444A Active EP2033785B1 (en) | 2006-05-23 | 2007-05-22 | Arrangement in a printing unit of a rotation printing press |
Country Status (4)
Country | Link |
---|---|
US (1) | US8006617B2 (en) |
EP (2) | EP2019753B1 (en) |
AT (1) | ATE456456T1 (en) |
WO (1) | WO2007135155A2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011078285B3 (en) * | 2011-06-29 | 2012-07-05 | Koenig & Bauer Aktiengesellschaft | Rollers e.g. film- and ink fountain rollers, arrangement for dry offset printing machine for printing newspaper, has rollers arranged in inking unit, where friction coefficient of rollers is adjusted for movement between surfaces |
DE102011078283A1 (en) * | 2011-06-29 | 2013-01-03 | Koenig & Bauer Aktiengesellschaft | Rotary printing machine with a form cylinder and an employee employed on this form cylinder inking |
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DE102006037615A1 (en) * | 2006-08-10 | 2008-02-14 | Felix Bƶttcher Gmbh & Co. Kg | Rubber rollers with rough surface |
DE102007000604B4 (en) * | 2007-09-27 | 2014-05-08 | Koenig & Bauer Aktiengesellschaft | printing tower |
DE102008001848A1 (en) | 2008-05-19 | 2009-12-03 | Koenig & Bauer Aktiengesellschaft | Arrangement in a printing unit of a printing press |
DE102008053406A1 (en) * | 2008-10-27 | 2010-04-29 | Robert Bosch Gmbh | Method for automatic axis correction in a processing machine for processing a material web |
DE102013210987A1 (en) * | 2013-06-13 | 2014-12-18 | Schaeffler Technologies Gmbh & Co. Kg | bearing arrangement |
DE102013218487B4 (en) | 2013-09-16 | 2017-03-30 | Koenig & Bauer Ag | Printing unit of a printing machine and monitoring device for this printing unit |
CN106739478B (en) * | 2016-12-12 | 2024-08-23 | ę±č„æé¶č¾¾å”äøęéå ¬åø | Cloth printing system |
CN108909180B (en) * | 2018-06-28 | 2023-10-17 | ę²³åå®é¢å¶ē½ęéå ¬åø | Ink transfer dividing roller test system and method for ink unit of metal can printer |
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DE1954316A1 (en) * | 1969-10-29 | 1971-05-19 | Schluckebier Wilhelm | Method and device for charging rollers in printing units of printing machines with a liquid medium, e.g. Color, and for dosing the medium |
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DE10228968B3 (en) * | 2002-06-26 | 2004-01-29 | Koenig & Bauer Ag | Cylinder pair of a printing unit of a rotary printing press |
JP2643187B2 (en) * | 1987-10-05 | 1997-08-20 | ę Ŗå¼ä¼ē¤¾éé½ē¤¾ | Ink delivery roll for inking unit and method for manufacturing the same |
JP2572366B2 (en) * | 1988-05-24 | 1997-01-16 | ę Ŗå¼ä¼ē¤¾ę±äŗ¬ę©ę¢°č£½ä½ę | Rotary printing press |
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DE4439144C2 (en) * | 1994-11-03 | 1997-04-30 | Roland Man Druckmasch | Inking unit of a rotary offset printing press |
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DE19956149A1 (en) * | 1999-11-23 | 2001-06-07 | Roland Man Druckmasch | Inking unit for a printing press |
DE10028478A1 (en) | 2000-06-08 | 2001-12-13 | Roland Man Druckmasch | Method of producing screen roller with surface cups involves shot-peening spherical particles, forming concave cavities and hardening edge layer. |
DE10133634B4 (en) * | 2000-08-09 | 2011-06-22 | Heidelberger Druckmaschinen AG, 69115 | Inking unit, in particular an offset printing machine |
AU2003266117A1 (en) | 2002-09-06 | 2004-04-30 | Koenig And Bauer Aktiengesellschaft | Rotary press inking units |
DE10314344B3 (en) * | 2003-03-28 | 2004-08-26 | Koenig & Bauer Ag | Storage device for elevator supplying print cylinder of printing press stores elevators in at least two offset vertical planes |
DE10352616A1 (en) * | 2003-07-11 | 2005-02-10 | Koenig & Bauer Ag | Printing unit of a printing press |
DE102004004665B4 (en) * | 2004-01-30 | 2005-12-29 | Koenig & Bauer Ag | Device for adjusting a pressing force exerted by a roller in a roller strip on an adjacent rotary body and for setting the roller against the rotary body or for stopping the roller from the rotary body |
DE102004037889B4 (en) * | 2004-04-05 | 2006-05-11 | Koenig & Bauer Ag | Device for supporting a cylinder and printing unit with at least three together as a printing unit acting cylinders |
DE102004040150A1 (en) | 2004-08-19 | 2006-02-23 | Man Roland Druckmaschinen Ag | Printing unit and inking unit |
DE102004047168A1 (en) | 2004-09-29 | 2006-04-06 | Man Roland Druckmaschinen Ag | Printer unit for newspaper printing machine, has ink distribution roller suppressible faster than damping device and application roller adjustable at cylinder for switching of indirect damping agent guide to direct damping agent guide |
WO2007134919A1 (en) * | 2006-05-23 | 2007-11-29 | Koenig & Bauer Aktiengesellschaft | Inking unit of a rotary press, comprising a film roller |
-
2007
- 2007-05-22 WO PCT/EP2007/054961 patent/WO2007135155A2/en active Application Filing
- 2007-05-22 AT AT07729400T patent/ATE456456T1/en active
- 2007-05-22 US US12/227,647 patent/US8006617B2/en not_active Expired - Fee Related
- 2007-05-22 EP EP07729400A patent/EP2019753B1/en active Active
- 2007-05-22 EP EP08168444A patent/EP2033785B1/en active Active
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011078285B3 (en) * | 2011-06-29 | 2012-07-05 | Koenig & Bauer Aktiengesellschaft | Rollers e.g. film- and ink fountain rollers, arrangement for dry offset printing machine for printing newspaper, has rollers arranged in inking unit, where friction coefficient of rollers is adjusted for movement between surfaces |
DE102011078283A1 (en) * | 2011-06-29 | 2013-01-03 | Koenig & Bauer Aktiengesellschaft | Rotary printing machine with a form cylinder and an employee employed on this form cylinder inking |
WO2013000602A1 (en) | 2011-06-29 | 2013-01-03 | Koenig & Bauer Aktiengesellschaft | Rotary printing machine having a forme cylinder and an inking unit positioned on said form cylinder |
DE102011078283B4 (en) * | 2011-06-29 | 2015-01-22 | Koenig & Bauer Aktiengesellschaft | Rotary printing machine with a forme cylinder and an inking unit employed on this forme cylinder |
Also Published As
Publication number | Publication date |
---|---|
US20090272284A1 (en) | 2009-11-05 |
EP2033785A3 (en) | 2012-08-29 |
EP2033785A2 (en) | 2009-03-11 |
US8006617B2 (en) | 2011-08-30 |
ATE456456T1 (en) | 2010-02-15 |
WO2007135155A2 (en) | 2007-11-29 |
EP2019753A2 (en) | 2009-02-04 |
EP2033785B1 (en) | 2013-01-09 |
WO2007135155A3 (en) | 2008-01-10 |
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